Vintage photograph. General Motors Proving Ground, a group of cars on the east turn of the loop. The outside lane is banked at 37 degrees or 77 percent, a slope which cancels centrifugal force in a car or passenger at high speed

Single Non exclusive use on print marketing materials up to 50,000 and digital copies, includes: brochure, catalog, flyer, newsletter, and other collateral printed pieces + web usage. Worldwide (excludes advertising) for 5 years.