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They already have them on kids bikes. Now they just need to upgrade to adult size, lower the weight, strap on an electric motor... http://www.thegyrobike.com/c

They already have them on kids bikes. Now they just need to upgrade to adult size, lower the weight, strap on an electric motor... http://www.thegyrobike.com/category-s/93.htm http://www.thegyrobike.com/category-s/93.htm

WiseWeasel 14y ago
And they should build the batteries into the wheel rims for extra stability.