HTC G1 truckbot: a robot tank

Two web engineers, Tim Heath (Python specialist) and Ryan Hickman (who works for Google Double Click) have developed a mini tank which operates with a mobile phone running on Android. The HTC G1 phone that sits on the tank robot directs the small vehicle which currently possesses limited mobile functions. Right now it is controlled by a laptop which gives instructions to the HTC. But the two friends want to turn the telephone into more than just a simple remote control. It will become the autonomous brain of the project in the future. The most surprising thing about its story is the cost of the material to build a Truckbot: just 30 dollars. Here's the breakdown: 16 dollars for Arduino software-hardware, 3 dollars for the Micro servo, 0.25 dollars for Hex inverter, 4 dollars for HTC USB breakout board, 3 dollars for the mini breadboard, 4 dollars for various electronic components. http://www.youtube.com/watch?v=_Aw76wsj7VQ via wired