2 ms·These guys: http://formula1.about.com/od/car1/a/kers.htm http://formula1.about.com/od/car1/a/kers.htmby alan_cx 14y agoThese guys: http://formula1.about.com/od/car1/a/kers.htm http://formula1.about.com/od/car1/a/kers.htm