Here's team 95's test chassis, taken sometime last week:
Video of Team 95's Test Chassis
(the gyro feedback has been fixed since this video, it's much smoother now)
It's a holonomic drive using omniwheels in an H-pattern, with some additional friction wheels on the corner to assist in bot-pushing and ramp climbing. We broke this one down, however, and are rebuilding the system in our final bot. With camera, ball harvester, ball shooter, and such, this is probably the most ambitious robot the team has done recently.