Reverse Trike - Spartan Trike Project
Ignore the fact that this link is to a trike. The main thing I'm pointing out is his design. the way the driver's legs go all the way to the front. it saves a lot of space.
And if you're wondering about his 1000 lb curb weight, that's only because he has to add ballast for California regulations. in reality, it weighs closer to 500-600 pounds.