Pavel [1] has some great posts on his blog about robotic vehicles using the .NET Micro Framework [2].
"When I was invited to TechEd North America 2008, I didn't want to go with "bare hands". That's how the simple robotic vehicle was build, completely based on .NET Micro Framework [3]. Module in the vehicle is the smallest .NET Micro Framework module on the market, the Digi Connect ME [4]. Remote controller is based on Tahoe development board [5] equipped with accelerometer. For communication are used ZigBee modules from Digi called XBee [6]."
Read more about the robotic vehicle: