My family had a blast driving these cars. We rode twice (our Groupon included two races) and loved both. The guys working on the course were conscientious and nice.
The warehouse, though, was filthy! The bathroom was dirty and there was no soap. Decoration throughout the warehouse was covered in dust and dirt from exhaust. Also, several of the arcade machines were broken.
The cars were terrific. They go really fast and are fun to drive. The course is also great. You're able to turn and drift frequently, but not allowed to bump other cars.
Plan accordingly for the weather; it's an outdoor course and the warehouse where you wait is open to the elements.
I would definitely revisit this business over other go-kart options in town.