Not to be left out of the plug in electric race, Volkswagen is working on a “Twin Drive” model based on the Golf. The twin drive uses the electric motor as its primary power source and a clean diesel engine as a backup and regenerative source. This is similar to the operation of the GM Volt, which allows for a longer range. VW says it will run the first 31 miles on pure electric from its lithium ion batteries before switching over to the diesel. The Germans are very eager to get this technology rolling down the roads as soon as possible. The Interior Ministry in Germany gave VW a $23.5 million grant to help spur the development. VW hopes to have the car ready in 2010.