Software running on computers and mobile phone -- heck, even guitars -- but cars?

We're pretty comfortable with the idea of open source software running on computers and mobile phone -- heck, even guitars -- but cars?
That one we're still warming up to, but this concept vehicle from EDAG definitely helps. As its name implies, the Light Car - Open Source lets developers modify and / or improve upon the auto's technologies -- or at least put a SNES emulator on the back. The lithium ion-powered bubble car also sports an OLED-infused exterior for lights and signals that are supposedly useful both to the driver and other nearby motorists, but in actuality we suspect it'd just scare anyone tailing behind. No information on the interior, but we imagine a decked out dashboard and some futuristic chairs. It's currently being shown off at the Geneva Motor Show.