Is the car on a driveway?

If so, you could possibly look at installing something like this

http://cgi.ebay.co.uk/CAR-PARKING-SE...QQcmdZViewItem

As the post above says, a Disklok is an essential item for any car. I'm sure most of us cossie owners have one on our cars that are parked in our garages, let alone if they were parked on the street!!! Just incase you are unsure of the exact one, follow the link below:

http://cgi.ebay.co.uk/CAR-PARKING-SE...QQcmdZViewItem