I actually left about halfway through this movie. Because neither the plot and relationships, nor the racing footage, were enough to hold my interest.
When I think about it, I guess the natural movies for comparison might be The Lords of Dogtown, and The Fast and Furious, and whatever that racing movie was that was the contemporary of Fast & Furious, that starred Sly Stallone. All three were far better movies. All three featured lots of racing action and racetrack energy and the like. And all three included some engaging off-track personal dynamics for the racers.
This movie seemed VERY short on plain old race footage and racetrack footage, and seemed to concentrate more on off-track personal relationships. Yet none of these relationships seemed to me to really appeal. "Tight but competitive" is the opening formula: but almost all I saw and heard was competition with little sense of connection. Competition without that connection is frankly very, very unappealing to my taste. I wanted to like these folks, but just couldn't.
Bummer ...