Back in February, Anki gave us a sneak peek at Anki Overdrive, the second generation version of its robotic race cars. It's introducing new toy vehicles, new gameplay mechanics, a new app and new modular race tracks that let players design their own custom race circuits. Today, Anki has announced that Overdrive will start shipping to retailers on September 20th in the US, UK, Germany and Canada. It also offered more details about the new cars and revealed two more game modes called Time Trial and King of the Hill. I had a chance to play around with Anki Overdrive at the company's office in San Francisco, and while I can't say it's perfect, I was impressed at how much simple toy cars could give me the feeling of being in a video game.