NHRA rules. Many tracks don't allow it even in 14+ second cars. Very strange run. I've never seen anyone run basically a 2.2 sec 60' and end up with a 12.4 1/4 @113MPH. You'd think with a 2.2, if the run was clean, he'd have to run about 117 MPH to pull off a 12.4. Maybe having the passenger slowed down the MPH and still allowed the early to mid 1/4 acceleration.