Gyro Bike
So a friend of mine just sent me this video. The Gyro Bike is a cool idea. Instead of using training wheels, they place a gyro in the front wheel to provide balance. Having two little girls that both started riding at the age of 2 I can really see how this would be nice, and the fact that it is going to sell for around $100 makes it pretty reasonable. If it can lasts long enough to get passed from one kid to the next.
My only real concern is how it effects the bike. GryoBike is saying that it doesn't effect the handling and they have a good group of testers that are agreeing. Now this might not be a concern for most people, but helping my 3 year old roll around the skate park, and the local pump track, it is hard for me to think that it wouldn't change the handling in some way. Still I have to give them credit for thinking up a pretty useful idea.
Here is a video on basics of how it works.