Some hackers have figured out how to hack into Chrysler cars (ie Jeep, Dodge Durango, etc) which have the Uconnect system. They are accessible by guessing an IP address and connecting to a random vehicle.

Hackers Remotely Kill a Jeep on the Highway?With Me in It | WIRED

The part about this I find alarming is that several years ago you could ask OnStar to cut off your service but in an emergency they could still access your car. So even if you shut off the service, there is no guarantee that the car is offline. wow.

 

Interesting article.