Don't Laugh [X(]!

How about the LEGO Mindstorms Robotics Invention System?
http://shop.lego.com/product.asp?p=3804&cn=55&d=13&t=5
You'll need more motors and sensors to create what you want.

There is a news group Lugnet with all sorts of threads on robotics (RCX)
http://news.lugnet.com/robotics/

This stuff is pretty wild [8D]. I got two set and have used it on different applications like DCC for my LEGO Train sets. Using DCC decoders from other manufacture. The DCC program was download from Mark R.
http://news.lugnet.com/robotics/rcx/?n=2080

Now back to RC stuff !
I will be setting up my LEGO RCX to trap the top speed of my car, once I have time to program it and make the light senors, I'll be set. My car was clocked already at the track, but I want my own speed trap .