I don't know what Street Touring eXtreme is... Scott Gibson is running there with his Cooper.
The kart obviously has a chance to crush everybody, but don't count out the others.
At the last EVO school, there was a Camaro within .5 seconds of my time Granted, he had spent several years on his setup, and my car axle hopped so bad, it was difficult to put the power down, but he beat all the Miatas there (yes, even Miatas on slicks). On a tight course like that, I would have never thought a big car like that would be as quick as it was. Driver has a lot to do with it, but I guess our group will have its share of really good autocrossers.