Thanks JohnM, your right. Dean Kamen is not the first person to produce clean transportation. Sorry for inferring that.
The approach I mean is to take a problem and to solve it from scratch. He didn't really use much of anybody else's idea's to make the Segway-HT.
Are car makers going to take an old design and try to improve it. For example automobiles are forever changing year to year, but why must they evolve into a cleaner product. Who is to say that future of transportation has to be a by product of an evolution of an automobile.
We need more fresh thinkers like Dean Kamen. He didn't make the Segway-HT(as far as we know) originally running gasoline. He solved his problem ignoring past ideas.
Sorry to be so general, but am in a rush to write this,
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