Thank god there's no 48-hour race anywhere in the world, because chances are nobody could beat Porsche in a 48 hour race. They're probably the only cars in the world that would stand up for something like that.
In 1964, when Lee Iacocca said, 'Shelby, I want you to make a sports car out of the Mustang,' the first thing I said was, 'Lee, you can't make a race horse out of a mule. I don't want to do it.' He said, 'I didn't ask you to make it; you work for me.'
Driving race cars was an avenue for me to learn how to build my own car, and that was my ambition all along.
Horsepower sells cars, torque wins races
I had a lot of fun driving race cars, but it wasn't my No. 1 priority.