Some of the new accessories were a saftey zone for the passenger to duck under the glovebox so they wouldn't get as hurt if they weren't under the glovebox. Preston also made his whole car out of  aluminum which made it lighter, faster, and stronger. He also made a very strong rollcage so when the Tucker might have a chance to rollover the passenger and driver wouldn't get crushed under the weight of the car. He also wanted to put seatbelts in his car but the car asscioation said it was better not to be attached with the car.