Do you want a Segway HT but can't quite afford one? Try building one at a fraction of the cost. One caveat:
There is no redundancy or backup system. It is not even robustly made. Loose wires literally dangle out the bottom. In the fairly likely event of the software crashing, a wire coming loose, a component failing, or the batteries running low, the wheels will lock and the entire kinetic energy of the system will be used to accelerate my head toward the ground.
If that turns out to be the only tradeoff, I'd be suprised.
