Or you can get one of those alarms that have the noise generators. They are so high pitched that you can only stand to be in the car for a second or two. Maybe just enough time to grab some cd or loss items around. And also to prevent your car from being stolen just install a fuel cut. Splice into the power going to the fuel pump and put a switch in and then hide the switch, so when you park the car you just hit the switch and them there is no power going to the fuel pump...