Here is a Goodyear video showing Carroll Shelby testing Goodyear tires on a 1967 Mustang GT500 at the Goodyear Proving Grounds in San Angelo, TX. This is where Dave started working in January as a tire engineer and performance test driver.
http://www.youtube.com/watch?v=zvjhaDmaM1AThe track shown in the video is a 5 mile circle with parabolic banking. The equilibrium speed at the top of the banking is 140 mph. This track has been closed for over 30 years, but they have a number of other track and off-road test areas in over 7,200 acres. YOu can see an aerial view of the proving grounds here:
http://maps.google.com/maps?f=q&hl=en&geocode=&q=San+Angelo,+TX&ie=UTF8&t=h&om=1&hq=&hnear=San+Angelo,+Tom+Green,+Texas&ll=31.619036,-100.3232&spn=0.136823,0.115871&z=13David