Premise:
"At just 2,300 sq km (3,710 sq miles), the area is small enough that it can be covered by car, north to south, in just a few hours."
Hypothesis: The distance can be covered in a relatively short amount of time.

it is not possible to tell

Premise:
"some of it quite subtle."
Hypothesis: None of remotely subtle in the slightest.

no

Premise:
"taxpayer return information, protected banking information, grand jury information, and credit card accounts listed in travel vouchers."
Hypothesis: Banking information isn't kept very safe.
no