[Vikesrock]

I don't think this is really what you meant, but 2175 is going with a 5 wheel drive system this year. It is based on the "Slide drive" that was used as a part of the Nonadrive system on the 148 and 217 robots last year and has been used prior to that in Vex.

There are four omni wheels on the robot corners facing forwards, and one omni wheel in the center of the robot facing sideways. The robot will drive like a traditional skid-steer drivetrain, but will also have the ability to strafe sideways.