- General Motors Phoenix Proving Grounds
- Honda Test Track
- General Motors Milford Proving Grounds
- Daimler Chrysler's Proving Grounds, Phoenix
- Ford's Dearborn, MI Test Facility
- Ferrari Test Track, Fiorano, Italy
We all know the cost of building a racetrack is astronomical; imagine laying 5-10 times the amount of pavement for your personal test grounds? Just wait for the automakers to go bankrupt and swoop in to buy these facilities!