As imagined by Modern Mechanix in 1933.

WHAT do I think about the automobile of the future?

Well, it will be about one-third the weight of the present car and will, of course, be streamlined. The new cars will all weigh less than 2,000 lbs. and will probably have motors of around 100 horsepower. They will be light weight cars, because the lighter the car the easier it rides.

This may sound like heresy in view of the popular supposition that heavier cars ride more easily. But my statement is true. The reason is not that the car is heavier, but that in heavy cars of today the distribution of sprung and unsprung weight accidentally happens to be better. With the new engineering which has been gaining vogue, with streamlining, and with the efforts of such engineers as Starling Burgess and Buckminster Fuller of Dymaxion fame among others, we will provide proper ratios between sprung and unsprung weight in all cars, and then the lighter cars will ride easier.

via Jalopnik