Apparently they did!

https://www.latimes.com/sports/la-xpm-2012-jun-30-la-sp-sn-hot-wheels-dare-world-record-20120630-story.html

The pair drove approximately 52 mph on the track before hitting the loop and experiencing seven Gs of force while going through the loop -- at a height of six stories.

Foust, who entered the loop just after Tracy, said it was necessary to avoid driving too fast through the loop in order to prevent the car from breaking down if any part of the chassis scraped against the track. He slowed down a bit when he saw the back left of Tracy’s vehicle was damaged. If either car went slower than 48 mph, it risked losing contact with the track and falling to the ground.