Soapbox cars are otherwise known as gravity cars. Essentially, they are three or four wheeled vehicles that are only powered by gravity. Soapbox derbies are still fairly popular for children with nationally organized races. However, there are only a handful of adult soapbox derby events across the country. We have participated in two events; one in Nevada City, CA and the other in Portland, OR. Both events were unique in their own regard. We are ready to add our own twist to the adult soapbox derby arena with the first annual San Jose Adult Soapbox Derby. There will be three classes of cars including artistic, speed, and ultimate.