Electric car conversions, three-wheeled enclosed trikes, dynamometers, and car parts.
I started as an automotive engineer in Detroit. I worked for GMC Truck and Coach in Pontiac for 5 years, as a co-op student. Then I went to Ford Motor in the Dearborn Design Center as a product design engineer for light trucks. They were the highest-volume product Ford made. Americans love pick-ups.
My love of cars came from the freedom they give, and the fascination of all things mechanical. Even after leaving the auto business proper, I still love automotive design. It can be even tougher than aerospace engineering, since it has to have low cost, great reliability, and good manufacturability.