Swede builds a Segway for material bill of less than $450 (300 Euro).
The Segway personal transporter did not revolutionize traffic, but they found their customers. One big barrier of broad adoption is the high price. The Segway X2 for instance sells for over $7,000 on Amazon. Now a Swedish guy named Petter Forsberg removed the price barrier with developing his own version of a Segway. The parts needed cost him about 300 Euro (~$433).
The DIY Segway does not look as sleek, but it drives pretty good. You can watch Petter driving his Segway type personal transporter below. The most expensive parts are the two motors. Forsberg skimmed these and some other parts from an electric scooter. The DIY Segway is micro processor controlled. Used here is a AVR AtMega168. More details on Petter's blog. Via Golem.
This is a very cool DIY project that I could imagine to actually become a product. Only problem I guess are these damn patents.