I converted my ’71 Beetle to electric power in 1982 but had limited success. It had an underpowered motor (2CM76 generator), two few batteries (60V), and a kit built controller that kept blowing out transistors. A year later I got married and had kids and so the car sat in my garage. Two years ago, after reading Bob Brant’s book on “Build Your Own Electric Vehicle”, I decided to upgrade to a new motor from Advanced DC Motors, add more batteries to 90V, buy a new controller, and have it painted. It now has much better performance and is reliable.