[puddleglum]

It's definitely not a new idea, but it's interesting to see someone is going to try to make it work again. I remember reading the article in Popular Mechanics or Mechanics Illustrated as well. They fitted a Pinto with a flywheel and drove something like 50miles at 50mph, if memory serves. I always wondered what undisclosed problems kept the concept from going forward. I think that using it in a hybrid makes good sense and the technology is so much better now.