I found this rather interesting and funny video showing how to convert an old Honda Rebel into an electric commute motorcycle.

We started with a Honda Rebel junker and a dream – to make a practical, zero emissions vehicle for commuting in San Francisco. After consulting with some plans available online which required chopping the frame significantly, Gxaoui suggested we figure it out for ourselves. Armed with a basic metal shop, we methodically convert the Honda rebel 250 into a clean quiet bike in about a week.(via)