A number of people from our office went, along with my wife and I.
The movie was good. But it seems to me that even considering it was a "documentary" that the camera work could have been better. Lots of shaky shots and audio that was not set up very good. Granted they were often taking to drivers strait out of the car with zero setup time for audio, but with some of the camera gear that is out there you should never have to watch the Blair Witch Project type of shots (shaky). There were also some typos in the onscreen title work during the film.
They did a great job with the story line, even if you are not into Star Mazda you will like it. However, I doubt anyone that is not a gear head would sit and watch the whole two hours. imho it should have been 90min.
Considering this was done by a team of two guys, it was an awesome effort.