http://www.msnbc.msn.com/id/7683127/
“Called SHIFT, it slowly transforms from a tricycle to bicycle configuration as the rider pedals faster, then returns to trike formation as the rider slows down.”
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Basically, it’s going to be an expensive toy parents will spend $500-1000 (my price guesstimation), so their kids can fail to learn how to properly ride a bike.
Many a roadie would tell you that’s an excellent first step on the road to becoming a triathlete 
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seeing my friend’s grandad, I’ll probably be happy these exist by the time I’m 90 and can’t keep my balance on my 2 feet let alone 2 wheels.