My dad has just bought himself a db9,i think its a bit of a midlife crisis but he;s been through that motorbike stage lol.Anyhow he has to go to business meetings in some rough parts of England and i've heard about people being able to hack into cars via bluetooth on their laptops.Are they easy to steal?

.Any car is easy to steal with a tow truck.Or what ever you call them over there.

Well...any car is easy to break "INTO" however, starting it up is a different matter. Most luxury brands, not to mention exotic automobile manufacturers, include microchips into their keys that "communicate" with the ECU of the vehicle, which if they don't, it won't crank the engine, therefore stopping a car from actually being stolen. "Hotwiring" a vehicle is not an option when it comes to BMW's, M-B and all these high end brands, including Aston Martin. And Bluetooth cannot "read" the cars specific start code...not to mention that there is a sensor in the key ingition slot, where even IF somehow the engine start code is present, if there is no key present in the ignition...and being that the thief is still outside (hopefuly)...it won't start.

If you own an Aston Martin chances are you have great insurance.

Most likely, it being an Aston Martin, everything is coded. Yes they can break the glass, but if it is towed, the alarm will go off. And no, bluetooth wont work. Only RF signals. Does your dad have to use the key to unlock the doors and start the car, or just tap the door and push a button. If he doesn't use the key, he has RF, and it may make it a little more dangerous. But you shouldnt be concerned.

If somebody wants to steal a car it will get stolen. As to the blue tooth thing I'm sure its possible.

Most thieves can't afford the technology to do the bluetooth hacking. Get LoJack on that car - it tracks the car's position via GPS, so they'll always know where it is. If someone wants something out of your car, they're gunna find a way to get it - windows aren't that hard to break. But as long as you know where it is, you can get it back.