Normally I would say "that's pretty cool!".

But this is the Nokia N900 and judging by Nokia's track record:

"You can control your car but with the following limitations:

Braking wll be available in the next update.

Airbags will not be controlled by the n900 because Nokia says "it is Not our responsibility it is the manufacturer and we don't want to pay for it".

Community steps up and installs party ballons instead (inflation is done by hamster lungs).

Nokia release MeeGo version and say "use this instead".

The MeeGo version can only drive the car forward does not steer and instantly drains the battery. The braking is a proprietory app and Nokia won't help the community to fix the battery problem."