Back in October, when Tesla unveiled the dual-motor Model S, Elon Musk joked that future cars would come with a robotic charger that plugs in automatically when you get home. At least we thought he was joking, until Musk revealed on Twitter recently that the futuristic charger may soon become a reality.

We love the idea of a charger that plugs in for you. After all, the new Model S can already park itself, so why should you have to bend over and plug it in? Backwards compatibility is also a nice touch, and it's another example of Tesla's devotion to its customers.

There's no word on when this new charger will actually launch, and it could be a while considering what Musk has planned. Once it is available, we're assuming you'll have to pay extra to have a robotic plug installed, though if you're already coughing up that much for a new car, it's probably worth it.