http://www.youtube.com/watch?v=qYIqy0AYyGg
Sorry for the bad quality, long story.
This is our current prototype for the ramp release... It's really hard to drive up right now, it needs reinforcing... and probably a wall. It's also not our final design, we have another group working on a lift that will actually lift the robot, this is just less parts. We aren't sure which will weigh more yet. The whole thing falls down after pulling a pin, which we plan do just do with a servo. Lexan is being used to spring it out, it's pretty sweet.