Buckminster Fuller designed the Dymaxion Car that was a miracle for its time and even for our time.
For those that haven't heard of it, the Dymaxion Car was a teardrop-shaped (least air resistance), 3-wheeled, rear-wheel (single) steering, 20 foot long, Aluminum bodied auto, designed by Buckminster Fuller in 1933 to achieve maximum output and service with minimum material input. It was about 6 feet tall (kinda like a big van), seated the driver and 10 passengers, weighed less than 1000 lbs., went 120 miles/hr on a 90 horsepower engine, and got between 30-50 miles to the gallon of gas.The car was a revolution in 1933. It would still be a revolution in 2007.
You have to wonder why automobile designers are not looking at similar designs. Especially since electrical drive would do wonders in reducing the weight and increasing the control of the wheel motors.