Tesla wanted to use a 2-gear transmission for the original roadster, but they couldn't find one that could handle the massive torque, so they ended up with a si

Tesla wanted to use a 2-gear transmission for the original roadster, but they couldn't find one that could handle the massive torque, so they ended up with a single ratio gearbox. Source: http://www.autoblog.com/2008/01/23/breaking-tesla-has-a-solution-for-their-transmission-woes-get/ http://www.autoblog.com/2008/01/23/breaking-tesla-has-a-solu... and Ashley Vance's biography of Elon Musk.