i am not sure if thats a good idea with these cars. i have been reading about how the computer in this car actually tailors its power to your driving style, and that the car (like a dr. schols insert) forms to you. im not sure if you want the car to relearn your driving patterns everytime you start up. and where do you live? your THAT worried about getting your car stolen? sry but these arent mercedes, i wouldnt worry all that much