Question: Where was the  Citroën vehicle designed with influences from what is called a beach buggy in the United Kingdom presented?

Context paragraphs:
Volkswagen Country Buggy: In 1967, Volkswagen Australasia Ltd. started with a project vehicle designed for Australia's rough conditions.  This vehicle, designated Country Buggy or Type 197, was designed by project head Volkswagen Australasia's Managing Director Rudi Herzmer and VW Engineer Cyril Harcourt in VW Australia's Clayton factory.

Tank truck: A tank truck or tanker truck (United States usage) or tanker (United Kingdom usage), is a motor vehicle designed to carry liquefied loads, dry bulk cargo or gases on roads.  The largest such vehicles are similar to railroad tank cars which are also designed to carry liquefied loads.  Many variants exist due to the wide variety of liquids that can be transported.  Tank trucks tend to be large; they may be insulated or non-insulated; pressurized or non-pressurized; and designed for single or multiple loads (often by means of internal divisions in their tank).  Some are semi-trailer trucks.  They are difficult to drive due to their high center of gravity.

Denby Eco-Link: The Denby Eco-Link, dubbed the super lorry by the mainstream media, is a commercial vehicle designed and built by Denby Transport of the United Kingdom.  The Eco-Link is a 60 tonne fully laden, 25.25m long, 8 axle B-Train (or B-Double) type of semi-trailer truck, in which a tractor unit pulls two semi-trailers, using fifth wheel couplings on both trailers.  As one prototype of the UK Longer Heavier Vehicle (LHV) vehicle definition, which are longer and heavier than normal Large Goods Vehicles (LGVs, British English: lorries), it is not currently permitted to be used in the UK.  As of 2009, the largest ordinary lorries in the UK have 6 axles and a maximum laden weight of 44 tonnes, and can be 16.5m long as single trailer semi-trailer trucks (British English: articulated lorries), or 18.75m as drawbar lorries.

M981 FISTV: The M981 FISTV (Fire Support Team Vehicle) is a United States Army armored vehicle designed to house an artillery observer team in mechanized units.  It was based on the M901 Improved TOW Vehicle (ITV) - itself based on the ubiquitous M113 Armored Personnel Carrier chassis - and outwardly closely resembles it, so as to make it less conspicuous on the battlefield.

Screw-propelled vehicle: A screw-propelled vehicle is a land or amphibious vehicle designed to cope with difficult snow and ice or mud and swamp.  Such vehicles are distinguished by being moved by the rotation of one or more auger-like cylinders fitted with a helical flange that engages with the medium through or over which the vehicle is moving.  Modern vehicles called "Amphirols" and other similar vehicles have specialised uses.

Plasan Sand Cat: The Sand Cat (Hebrew: פלסן קרקל‎ ‎ , also Plasan Caracal) is a composite armored vehicle designed by Plasan of Israel.  It is based on a commercial Ford F-Series chassis shortened to a 2.84 m (112 in) wheelbase by Manning Equipment of Louisville, Kentucky, United States.  Originally designed as a potential replacement for the AIL Storm jeeps of the Israel Defense Forces (IDF), they have since developed numerous versions of the vehicle from 4 to 6 tons to transport up to 8 soldiers.  Examples have undergone trials by the IDF in Israel and the U.S. Army at the Aberdeen Proving Ground in Maryland.

Dune buggy: A dune buggy or beach buggy is a recreational motor vehicle with large wheels, and wide tires, designed for use on sand dunes, beaches, or desert recreation.  It is called a "Beach Buggy" in the United Kingdom, Ireland and many other English speaking countries.

Bright Automotive: Bright Automotive was a startup company in Anderson, Indiana, working to create a fuel-efficient line of plug-in electric vehicles.  The company was started in 2008 with a team of employees from former companies such as Chrysler, Delphi, GM, Mazda, and Toyota.  The company designed its first vehicle, the IDEA, a plug-in hybrid electric fleet vehicle designed to reduce fuel costs for corporations that maintain a large commercial fleet.  Bright also had a service branch called eSolutions that focused on speeding up the process of car electrification with consulting and conversions.  Bright's last CEO, Reuben Munger, stated in early press releases that he wished to see the IDEA in production by 2013.

Citroën C-Buggy: The Citroën C-Buggy is a concept car presented by Citroën in May 2006 at the Madrid Motor Show.  It is a two-seater city car, with Dune buggy and SUV styling influences.  It is made with some protection against off-road grievances, such as slightly raised suspension and a sump guard.  It has tinted glass inserts in the lower body side panels, and no doors.

LADA 4x4: The LADA 4x4, formerly called the Lada Niva (Russian: Лада Нива ; Niva ("нива") is the Russian word for "crop field"), is an off-road vehicle designed and produced by the Russian (former Soviet) manufacturer AvtoVAZ specifically for the rural market.  It was also marketed as the Lada Sport in Iceland, Lada Taiga in Austria, Bognor Diva in Uruguay, the Lada Cossack in the United Kingdom, and is offered since 2009 on most markets as the LADA 4x4.

Supporting paragraphs: Citroën C-Buggy Dune buggy
Answer: the Madrid Motor Show