AUDI E-Bike in 1921


Audi developed an  auxiliary bicycle engine ,that became more successful in the early 1920's.It was a 118 cc two stroke engine ,developing 1 horsepower.Later version provides upto 143 cc and 2.25 horsepower.This miniature power cycle soon proved to be so straightforward and reliable that the public nicknamed as a "Das Kleine Wunder"-the little marvel-.By the end of 1922's about 30,000 0f these engines had been sold.

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