As an extreme example, before starting Tesla, Eberhard took an existing electric car [A], which was itself built on an existing kit car [B], and had a different

As an extreme example, before starting Tesla, Eberhard took an existing electric car [A], which was itself built on an existing kit car [B], and had a different battery technology installed [C]. And then used it as a proof of concept to start Tesla. [A] https://en.wikipedia.org/wiki/AC_Propulsion_tzero https://en.wikipedia.org/wiki/AC_Propulsion_tzero [B] http://www.funcar.com/sportech/ http://www.funcar.com/sportech/ [C] https://en.wikipedia.org/wiki/AC_Propulsion_tzero#Lithium-ion_battery_conversion https://en.wikipedia.org/wiki/AC_Propulsion_tzero#Lithium-io...