What should we make of the Mitsubishi Outlander hybrid hack?

Over the past few days, the motoring community has been abuzz with news that a team of hackers managed to wirelessly hack a Mitsubishi Outlander, taking control of its electric charging and alarm systems.

While this is far from the first time a car has been remotely hacked, it has raised fresh fears about just how easy it is to break into contemporary vehicles.

But just how worried should be?