A sprint car starts as a tube-frame chassis, and I race with a 410-cubic-inch Chevy V-8 engine. My dad was a mechanic, and he has a lot of good people around him, and we kind of pieced this motor ...

A new Red Bull chassis didn't help Sergio Perez turn his fortunes around as he could only qualify in 13th place for the sprint race in ... off the pace. "The car was a bit difficult on the bumps.