Standing 9 inches tall and weighing just 700 grams the Plen robot is a creation of the bright minds at Systec Akazawa in Japan. It is equipped with a 3 axis accelerometer which helps it in balancing. Plen has been trained by its creators to actually skateboard, even down to popping a small wheelie.

However Plen costs a whopping 250,000 yen (about US$2,200).
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