As a Bonneville newbie, one item that’s become clear to me is that the chassis and engine selection for a land speed record car are two very separate and distinct choices for any car builder. Most competitors combine the engine and the chassis in order to enter what appears to be hundreds of different classes. Often a builder will try and find an overlooked class, build a special car and go for the record. People may even show up at Bonneville with more than one engine in order to set multiple records with one chassis.