bot carts. need info!

[1075master]

yes i know i'll get yelled at because theres already posts on this but there are so many and they are long and i'm having difficulty finiding what i am looking for.
i am trying to come up with an idea of how to build a simple cart driven by 2 motors. i am planning on using the rc and oi from a previous year to control it.
it needs to be small but be able to get over bumps and somehow raise the bot to a good working height that we like.(about 3 feet from ground).
if anyone has any plans or ideas they can give me post them here or you can email me here.

once again yes i know i'm repeating posts from before but they tend to be on carts in general. if someone knows of a thread with the info i'm looking for tell me and i'll close down this thread. thanks!