Document:

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                                                                    Exhibit 10.7

February 13, 1997

Mr. Denis Cohen
25, rue Ernest Renan
F-92190 Meudon
France

Dear Mr. Cohen:

         I am pleased to offer you the position of President of NavTech Europe.
In this capacity, you will report to the Chief Operating Officer of Navigation
Technologies Corporation. You will be based in the offices of Navigation
Technologies S.A.S., our French subsidiary which is located in Ivry-Sur-Seine,
France. Within ninety (90) days after your date of hire, we will jointly assess
the appropriate location of your employment. Once that location has been
determined, we will make any necessary changes.

TERM OF EMPLOYMENT

         The initial term of your employment will commence on March 1, 1997, or
as soon as possible, and continue through three years after your date of hire.

BASE SALARY

         You win receive a base annual cash compensation in the total gross
amount of 1,072,000 French Francs (or the equivalent), to be paid in accordance
with NavTech's prevailing practices. At your option, 20% of your base annual
cash compensation shall be treated as a bonus paid to you on account of your
trips outside of France. In the event that your employment location is changed,
your base salary will be paid to you in the currency of the new place based on
the exchange rate prevailing at the time of change.

SIGNING BONUS

         You will receive a signing bonus in the total gross amount of 804,000
French Francs, to be paid as follows: (i) 268,000 French Francs on the first
anniversary of your date of hire; (ii) 268,000 French Francs on the second
anniversary of your date of hire; and (iii) 268,000 French Francs on the third
anniversary of your date of hire; provided, however, that you shall be entitled
to such payments only if you continue to be employed by NavTech on each such
anniversary date.

PERFORMANCE BONUS

         You will also be eligible to receive annual performance bonuses of up
to 50% of you base annual cash compensation, subject to your achievement of
applicable milestones and objectives. For each year, any such bonuses will be
paid to you on or before April 30th of the following year. For the year 1997,
the bonus will be fixed at 50% of the base cash compensation paid to you by
NavTech between your date of hire and December 31, 1997.

<PAGE>

STOCK OPTIONS

         I will recommend that the Board of Directors of NavTech grant you the
option to purchase 200,000 shares of the common stock of Navigation Technologies
Corporation at the fair market value at the time of the grant. Such options will
vest, subject to your continued employment with NavTech, in equal annual
installments over a four year period after the date of grant. In the event that
the Board authorizes an alternative long-term executive compensation plan, I
will recommend to the Board of Directors that it grant you the option to switch
into that plan.

PENSION

         NavTech will pay any and all mandatory employer contributions toward
your pension in accordance with applicable requirements.

VACATION

         You will be entitled to 25 vacation days per year, in addition to legal
holidays.

HEATH INSURANCE

         NavTech will pay any and all mandatory employer contributions toward
your health insurance in accordance with applicable requirements.

COMPANY CAR

         You will be provided with the use of a company car equipped with a
navigation system. You will be reimbursed for expenses incurred in connection
with the normal use of the car, including gasoline, repairs, maintenance and
insurance. Gasoline expense in connection with vacations shall be on your own
account.

RELOCATION

         In the event of re1ocation, you will be reimbursed for your expenses in
accordance with NavTech's prevailing practices. Such reimbursement shall cover
reasonable expenses incurred in connection with temporary housing during your
search for a permanent residence, brokers' fees and commissions, moving and
storage expenses and other ordinary and usual relocation expenses.

SEPARATION TERMS

         In the event that your employment is terminated without cause and in
connection with either or both of (a) a change of majority ownership or control
of NavTech B.V. or (b) a substantial change in the nature, scope or extent of
the business of NavTech B. V. which renders your services unnecessary, you will
be provided, at your option, with either of the following: (1) an employment
position with Navigation Technologies Corporation in the United States on
otherwise similar terms plus reimbursement of reasonable relocation expenses; or
(2) the continuation of your base annual cash compensation payments (excluding
any unpaid signing bonus) and benefits for the period of one year after the date
that your employment is terminated, plus 50% of the maximum performance bonus
amount to which you would otherwise be entitled during such one year period. If,
pursuant to the preceding sentence, you accept an employment position with
Navigation Technologies

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Corporation in the United States, but your term of employment is not renewed or
extended, the company will reimburse you for the expenses of your relocation to
France provided that you request such relocation within six months after the
expiration of the initial term of your employment. In the event that your
employment is otherwise terminated without cause, you will be provided with
termination payments equal to the base annual cash compensation and benefits
(excluding any unpaid signing and performance bonus) otherwise payable under
this letter for the remainder of your term of employment, but in no event less
than one year. In the event that you are entitled to any severance payments
under this paragraph, at your option. the Company will make such payments to you
from the payroll of Navigation Technologies S.A.S. in accordance with NavTech's
prevailing practices in France. Also, assuming that there are no adverse tax
consequences, withholding, social or other additional costs, or legal
prohibitions, the Company will treat any termination payments to you as either
salary continuation or severance payments, at your option. The foregoing shall
be your sole and exclusive remedies, and you shall not be entitled to any other
or further payments, compensation, benefits or relief in connection with any
termination of your employment.

ARBITRATION

         In order to minimize costs and expenses for all parties, any disputes
or controversies arising in connection with your employment or the cessation of
your employment will be resolved by binding arbitration in the Kingdom of the
Netherlands under Dutch law. The arbitration will be conducted in the English
language and in accordance with the applicable rules of' the Netherlands
Arbitrage Institute.

PROPRIETARY INFORMATION

         This offer is contingent on the execution by you and NavTech of
NavTech's standard Proprietary Information and Invention Agreement on or before
the commencement of your employment.

                                  * * * * * * *

         Let me express my pleasure and enthusiasm about the prospect of your
employment with NavTech and my expectation that you will find NavTech to be an
exciting and fulfilling place to work.

         I look forward to your positive response to this offer and to your role
as a key member of the team that will lead NavTech to success.

                                   Cordially.

                                   NAVIGATION TECHNOLOGIES B.V,

                                   By:  /s/ Ronald Brumback
                                        ------------------------------
                                           Its Duly Authorized Agent

AGREED TO AND ACCEPTED:

/s/ Denis Cohen                         2/13/97
-----------------------                 ----------------------
DENIS COHEN                             Date<PAGE>
                                                                   Exhibit 10.8

October 27, 1998

Mr. Lawrence D. Chesler, Esq.
Plaza 440
440 North Wabash Avenue
Chicago, IL 60611

Dear Larry:

I am pleased to offer you the position of Vice President, Legal and General
Counsel of Navigation Technologies Corporation ("NavTech"). Subject to your
acceptance of this offer, your employment will commence in November 1998.

You will receive a base cash compensation of $7,692.30 paid bi-weekly, equal to
$200,000.00 per annum. Commencing as of January 1, 1999 you will also be
eligible for annual bonuses of up to 30% of your base annual cash compensation,
subject to your achievement of applicable milestones and objectives. For each
year, any such bonuses will be paid to you on or before April 30th of the
following year. You will receive a one-time signing bonus of $20,000, payable
within 90 days of your start date.

In addition, it is the intention of the corporate officers of NavTech to create
a long-term incentive plan which may include an equity component. Such a plan
would require Board approval which is not guaranteed. However, the broad outline
of such a plan has been agreed. Assuming such a plan is approved, a
recommendation will be made to the Board that you be granted options to purchase
600,000 shares of NavTech common stock at the fair market value at the date of
the grant, with vesting to occur over the four-year period following the date of
the grant. It is also anticipated, but not guaranteed, that there will be
additional options granted in subsequent years.

NavTech currently provides company-paid employee insurance from your date of
hire including medical, dental, vision, life and long-term disability coverage.
Employees have the option of acquiring medical/dental/vision coverage for their
dependents as well, with the company paying 50% of the premium. You will also be
eligible to participate in a Section 125 Health Care/Dependent Care
Reimbursement Plan and a 401(k) Savings and Investment Plan.

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Mr. Lawrence Chesler
October 27, 1998
Page 2

While I hope our relationship will be long and mutually beneficial, it is
mutually recognized that your relationship with NavTech shall not be for any
definite term, but rather shall be one of "at-will" employment.

In the event that your employment is terminated by NavTech without cause (as
defined below), NavTech will provide you with the following: severance pay equal
to nine (9) months base cash compensation, payable either monthly or as an
initial lump sum at NavTech's sole discretion; and continuation of your normal
benefits for a period of nine (9) months after the date of termination, In the
event that you have not obtained other full time employment and are not
otherwise being compensated for business or professional activities on a similar
basis on or before the expiration of nine (9) months after the date of such
termination, and provided you have exercised reasonable best and continuous
efforts to secure such employment or compensation, NavTech will pay you
additional conditional severance in the form of continuation of your base cash
compensation and normal benefits in effect on the date of termination for an
additional three (3) month period or until such time that you obtain such other
employment or receive such other compensation, whichever occurs first. The
foregoing shall be your sole and exclusive remedy and you shall not be entitled
to any other or further payments, compensation or benefits from NavTech in the
event of any termination of your employment. For purposes of this paragraph,
"cause" shall mean any act or omission in the conduct of your duties and
responsibilities which constitutes gross negligence or wilful misconduct, or any
act or omission outside the course of your duties and responsibilities which
includes dishonesty or criminal conduct.

In order to minimize costs and expenses for all parties, any disputes or
controversies arising in connection with your employment or the cessation of
your employment with NavTech will be resolved by binding arbitration in the
State of Illinois. The arbitration will be conducted in accordance with the
applicable rules of the American Arbitration Association under Illinois law.

This offer is contingent on the execution by you and NavTech of the Proprietary
Information and Inventions Agreement attached hereto as Exhibit A on or before
the commencement of your employment with NavTech.

This offer is also contingent on your providing NavTech with proof of your legal
eligibility to work in the United States within seventy-two (72) hours of your
first day of employment.

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Mr. Lawrence Chesler
October 27, 1998
Page 3

Let me express my pleasure and enthusiasm that you will be joining NavTech, and
my expectation that you will find NavTech to be an exciting and fulfilling place
to work.

I look forward to your positive response to this offer and to your role as a key
member of the team that will lead NavTech to success.

Cordially,

/s/  Ronald A. Brumback
------------------------------------
Ronald A. Brumback
President and Chief Operating Officer

AGREED TO AND ACCEPTED:

/s/ Lawrence D. Chesler                                       10/30/98
---------------------------------------------                 ------------------
Lawrence D. Chesler                                           Date

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                       Navigation Technologies Corporation

                             PROPRIETARY INFORMATION
                            AND INVENTIONS AGREEMENT

   In consideration of my employment or continued employment by Navigation
Technologies Corporation and the compensation now and hereafter paid to me, I
hereby make the representations, warranties and covenants contained in this
Agreement. For purposes of this Agreement, "Company" shall mean Navigation
Technologies Corporation and its subsidiaries.

1. Recognition of Company's Rights: Nondisclosure. At all times during the term
of my employment and thereafter, I will hold in strictest confidence and will
not disclose, use, lecture upon or publish any of the Company's Proprietary
Information (defined below), except as such disclosure, use or publication may
be required in connection with my work for the Company, or unless an officer of
the Company expressly authorizes such in writing. I hereby assign to the Company
any rights I may have or acquire in such Proprietary Information and recognize
that all Proprietary Information shall be the sole property of the Company and
its assigns and the Company and its assigns shall be the sole owner of all trade
secret rights, patent rights, copyrights and all other rights throughout the
world (collectively, "Proprietary Rights") in connection therewith.

   The term "Proprietary Information" shall mean trade secrets, confidential
knowledge, data or any other proprietary information of the Company. By way of
illustration but not limitation, "Proprietary Information" includes (a) trade
secrets, inventions, ideas, processes, formulas, source and object codes, data,
programs, other works of authorship, know-how, improvements, discoveries,
developments, designs and techniques (hereinafter collectively referred to as
"Inventions"); and (b) information regarding plans for research, development,
new products, marketing and selling, business plans, budgets and unpublished
financial statements, licenses, prices and costs, suppliers and customers; and
information regarding the skills and compensation of other employees of the
Company.

2. Third Party Information. I understand, in addition, that the Company has
received and in the future will receive from third parties confidential or
proprietary information ("Third Party Information") subject to a duty on the
Company's part to maintain the confidentiality of such information and to use it
only for certain limited purposes. During the term of my employment and
thereafter, I will hold Third party Information in the strictest confidence and
will not disclose (to anyone other than Company personnel who need to know such
information in connection with their work for the Company) or use, except in
connection with my work for the Company, Third party Information unless
expressly authorized by an officer of the Company in writing.

3. Assignment of Inventions.

   3.1 Assignment. I hereby assign to the Company all my right, title and
interest in and to any and all Inventions (and all Proprietary Rights with
respect thereto)

<PAGE>

whether or not patentable or registrable under copyright or similar statutes,
made or conceived or reduced to practice or learned by me, either alone or
jointly with others, during the period of my employment with the Company.
Inventions assigned to or as directed by the Company by this paragraph 3 are
hereinafter referred to as "Company Inventions." I recognize that this Agreement
does not require assignment of any invention (hereinafter referred to as a
"Personal Invention") that I develop entirely on my own time without using the
Company's equipment, supplies, facilities, or trade secret information except
for those inventions that either:

   (1) Relate at the time of conception or reduction to practice of the
invention to the Company's business, or actual or demonstrably anticipated
research or development of the Company; or

   (2) Result from any work performed by me for the Company.

   3.2 Government. I also assign to or as directed by the Company all my right,
title and interest in and to any and all Inventions, full title to which is
required to be in the United States by a contract between the Company and the
United States or ally of its agencies.

   3.3 Works for Hire. I acknowledge that all original works of authorship which
are made by me (solely or jointly with others) within the scope of my employment
and which are protectable by copyright are "works made for hire," as that term
is defined in the United States Copyright Act (17 U.S.C., Section 101).

4. Enforcement of Proprietary Rights. I will assist the Company in every proper
way to obtain and from time to time enforce United States and foreign
Proprietary Rights relating to Company Inventions in any and all countries. To
that end I will execute, verify and deliver such documents and perform such
other acts (including appearances as a witness) as the Company may reasonably
request for use in applying for, obtaining, perfecting, evidencing, sustaining
and enforcing such Proprietary Rights and the assignment thereof. In addition, I
will execute, verify and deliver assignments of such Proprietary Rights to the
Company or its designee. My obligation to assist the Company with respect to
Proprietary Rights relating to such Company Inventions in any and all countries
shall continue beyond the termination of my employment, but the Company shall
compensate me at a reasonable rate after my termination for the time actually
spent by me at the Company's request on such assistance.

   In the event the Company is unable for any reason, after reasonable effort,
to secure my signature on any document needed in connection with the actions
specified in the preceding paragraph, I hereby irrevocably designate and appoint
the Company and its duly authorized officers and agents as my agent and attorney
in fact, which appointment is coupled with an interest, to act for and in my
behalf to execute, verify and file any such documents and to do all other
lawfully permitted acts to further the purposes of the preceding paragraph with
the same legal force and effect as if

<PAGE>

executed by me. I hereby waive and quitclaim to the Company any and all claims,
of any nature whatsoever, which I now or may hereafter have for infringement of
any Proprietary Rights assigned hereunder to the Company.

5. Obligation to Keep Company Informed. During the period of my employment and
for six (6) months after termination of my employment with the Company, I will
promptly disclose to the Company fully and in writing all Inventions authored,
conceived or reduced to practice by me, either alone or jointly with others. In
addition, I will promptly disclose to the Company all patent applications filed
by me or on my behalf within a year after termination of employment. At the time
of each such disclosure, I will advise the Company in writing of any inventions
that I believe fully qualify as a Personal Invention; and I will at that time
provide to the Company in writing all evidence necessary to substantiate that
belief. The Company will keep in confidence and will not disclose to third
parties without my consent any proprietary information disclosed in writing to
the Company pursuant to this Agreement relating to Inventions that qualify fully
as a Personal Invention. I will preserve the confidentiality of any Invention
that does not fully qualify as a Personal Invention.

   I agree to keep and maintain adequate and current records (in the form of
notes, sketches, drawings and in any other form that may be required by the
Company) of all Proprietary Information developed by me and all Inventions made
by me during the period of my employment at the Company, which records shall be
available to and remain the sole property of the Company at all times.

6. Prior Inventions. Inventions, if any, patented or unpatented, which I made
prior to the commencement of my employment with the Company are excluded from
the scope of this Agreement. To preclude any possible uncertainty, I have set
forth on Exhibit A attached hereto a complete list of all Inventions that I
have, alone or jointly with others, conceived, developed or reduced to practice
or caused to be conceived, developed or reduced to practice prior to the
commencement of my employment with the Company, that I consider to be my
property or the property of third parties and that I wish to have excluded from
the scope of this Agreement. If disclosure of any such Invention on Exhibit A
would cause me to violate any prior confidentiality agreement, I understand that
I am not to list such Inventions in Exhibit A but am to inform the Company that
all such Inventions have not been listed for that reason.

7. Additional Activities. I agree that during the period of my employment with
the Company I will not, without the Company's express written consent (which is
hereby given as to those activities set forth on Exhibit A), engage in any
employment or business activity in any way connected with the Business of the
Company other than for the Company or which in any way detracts from my ability
to perform my duties for the Company. I agree further that for the period of my
employment by the Company and for one (1) year after the date of termination of
my employment by the Company I will not (i) induce any employee of the Company
to leave the employ of the Company or (ii) solicit the business of any client or
customer of the Company (other than on behalf of the Company), or (iii) engage
in any business or perform any

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service in any state or territory in which the Company does business at the time
of my employment termination, in competition with the business of the Company
relating to creating, managing, adapting, applying, distributing, selling or
licensing navigable street map databases or related database creation, access
and update software or vehicle navigation software or any logical extensions
thereof, or have any interest, whether as proprietor, partner, employee,
stockholder, principal, agent, consultant, director, officer, or in any other
capacity or manner whatsoever, in any enterprise which shall so engage.

8. No Improper Use of Materials. During my employment by the Company I will not
improperly use or disclose any confidential information or trade secrets, if
any, of any former employer or any other person to whom I have an obligation of
confidentiality, and I will not bring onto the premises of the Company any
unpublished documents or any property belonging to any former employer or any
other person to whom I have an obligation of confidentiality unless consented to
in writing by that former employer or person. I will use in the performance of
my duties only information which is generally known and used by persons with
training and experience comparable to my own, which is common knowledge in the
industry or otherwise legally in the public domain, or which is otherwise
provided or developed by the Company.

9. No Conflicting Obligation. I represent that my performance of all the terms
of this Agreement and as an employee of the Company does not and will not breach
any agreement to keep in confidence information acquired by me in confidence or
in trust prior to my employment by the Company. I have not entered into, and I
agree I will not enter into, any agreement either written or oral in conflict
herewith.

10. Return of Company Documents. When I leave the employ of the Company, I will
deliver to the Company any and all drawings, notes, memoranda, specifications,
devices, formulas, and documents, together with all copies thereof, and any
other material containing or disclosing any Company Inventions, Third Party
Information or Proprietary Information of the Company. Prior to leaving, I will
cooperate with the Company in completing and signing the Company's termination
statement for technical and management personnel.

11. Legal and Equitable Remedies. Because my services are personal and unique
and because I may have access to and become acquainted with the Proprietary
Information of the Company, the Company shall have the right to enforce this
Agreement and any of its provisions by injunction, specific performance or other
equitable relief, without bond and without prejudice to any other rights and
remedies that the Company may have for a breach of this Agreement.

12. Notices. Any notices required or permitted hereunder shall be given to the
appropriate party at the address specified below or at such other address as the
party shall specify in writing. Such notice shall be deemed given upon personal
delivery to

<PAGE>

appropriate address or if sent by certified or registered mail, three (3) days
after the date of mailing.

13. General Provisions.

    13.1 Governing Law. This Agreement will be governed by and construed
according to the laws of the State of Illinois.

    13.2 Entire Agreement. This Agreement is the final, complete and exclusive
agreement of the parties with respect to the subject matter hereof and
supersedes and merges all prior discussions between us. No modification of or
amendment to this Agreement, nor any waiver of any rights under this Agreement,
will be effective unless in writing and signed by the party to be charged. Any
subsequent change or changes in my duties, salary or compensation will not
affect the validity or scope of this Agreement. As used in this Agreement, the
period of my employment includes any time during which I have been or may be
retained by the Company as a director or consultant.

    13.3 Severability. If one or more of the provisions in this Agreement are
deemed unenforceable by law, then such provision will be deemed stricken from
this Agreement and the remaining provisions will continue in full force and
effect.

    13.4 Successors and Assigns. This Agreement will be binding upon my heirs,
executors, administrators and other legal representatives and will be for the
benefit of the Company, its successors, and its assigns.

    13.5 Survival. The provisions of this Agreement shall survive the
termination of my employment and the assignment of this Agreement by the Company
to any successor in interest or other assignee.

    13.6 Employment. I agree and understand that nothing in this Agreement shall
confer any right with respect to continuation of employment by the Company, nor
shall it interfere in any way with my right or the Company's right to terminate
my employment at any time, with or without cause.

    13.7 Waiver. No waiver by the Company of any breach of this Agreement shall
be a waiver of any preceding or succeeding breach. No waiver by the Company of
any right under this Agreement shall be construed as a waiver of any other
right. The Company shall not be required to give notice to enforce strict
adherence to all terms of this Agreement.

    This Agreement shall be effective as of the first day of my employment with
the Company, namely: November 27, 1998.

<PAGE>

    I HAVE READ THIS AGREEMENT CAREFULLY AND UNDERSTAND ITS TERMS. I HAVE
COMPLETELY FILLED OUT EXHIBIT A TO THIS AGREEMENT.

Dated: November 27, 1998                         /s/ Lawrence Chesler
                                                 -------------------------------
                                                 Signature

                                                 Lawrence Chesler
                                                 -------------------------------
                                                 (Printed Name)

                                                 440 N. Wabash Avenue
                                                 -------------------------------
                                                 (Address)

                                                 Chicago, IL 60611
                                                 -------------------------------

Accepted and Agreed To:

Navigation Technologies Corporation

By: /s/ Ronald Brumback
   --------------------------------

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