The new wheel is a cube?

Well, if I invented a new wheel that decreased friction (therefore increases speed, reduces drag, increases MPG), increases traction in wet conditions, increases traction on multiple types of surfaces including snow, sand, etc. If I invented a new wheel that could go on to every single car, truck, motorcycle and ATV in the world I'd market it to skateboarders.

Brilliant idea, too bad the inventor isn't seeing the big picture.
Assuming the idea can crossover, Im sure he has patents. Breaking into the car market etc requires a lot of capital. Why not prove your concept in a market with a low startup cost? If it works tire companies will be lining up to license it and he didnt have to raise 10's of millions of dollars and risk it just to prove his concept.