You don't take on projects like this because you're on a mission to make the most efficient vehicle. Lots of people are paid good money to do that and produce the slip-slugs we have today.

A project like this is to have a fun experience in a vehicle that was never designed to drive with electric qualities. I don't need the most efficient vehicle for my use so I could afford to trade some of that for fun. I'd probably try a Subaru Impreza STi because it would just be a blast to have a car of that size and stature with an electric powerplant under the hood (or trunk, or wherever it fits)