LEONARDO DA VINCI’S TRIKE DREAM

Have a look at Leonardo da Vinci’s tricycle. This invention gave rise to the bicycle, tricycle and automobile.  It enclosed a spring mechanism that will carry it.

See the link below for the entire history of the self-propelled vehicle from Leonardo’s vehicle on to the vehicles of the present:

http://explorerplanet.blogg.no/1393799340_02032014.html

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