Not content with scaring the bejesus out of Chrysler owners, Wired has uncovered a hacker who says he can open a GM car with OnStar, start it or track it remotely. The only thing he can’t do is put the car in gear or steer it, which still requires a key.

Hacker Samy Kamkar says his $100 device can seriously annoy — or seriously rob — a GM car owner if he wanted it to. GM promptly responded by saying it fixed the flaw in a way that owners won’t have update their cars.

Kamkar said his exploit wasn’t mean to cause mayhem, but rather to show how modern, technological cars can be vulnerable to hackers.

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Wired Autopia’s Damon Lavrinc got the chance to drive the Volkswagen XL1 in Germany. Lavrinc, who has a wealth of experience writing about automotive technology and alternative powertrains, gives us a good picture of what it’s like to drive the XL1, from the awkward entry/egress, to the seemingly underpowered air-conditioning system to the lack of a simple iPod connector (because that adds weight, natch). Check it out over at Autopia.

In three weeks, Bertel will return to the scene of his crimes at Volkswagen in Wolfsburg, and will drive the XL1 on the same Wolfsburg-to-Berlin trip as Wired, maybe even the same XL1 as Wired. Check it out when he returns. If he does.