Hi this is my creation of a top gear car challenge. Mine has steering on the top car/helecopter and a opening door at the top as well as 2 main doors on the car . It does'nt have a trunk because it would not open right and if you put anything in , it has no where to hold the item. A slight problem with the steering routing caused me to make the steering again but it only works when forced . The cars are very heavy and this made me take out the suspension. Eventhough it has big spaces around the rear of the top car/helecopter , It can hold a lot of stuff without anything falling out. Modifications have made it possible for knex men to fit on the seats on both models. Please vote and follow me . If you have a 3DS or 3DS XL I am happy to trade friend codes.