Always bring your towel.
Re: RoadZters or Cars 2 Sorry Sliders?
I unfortunately have not played the Cars 2 Sliders. However, I will HIGHLY recommend RoadZters. My wife and I love it, and it plays great with 2. It takes a lot of practice learning how to shoot with the ZBall, but it's worth the effort. If you can get it, by all means do so.