good advice it is, but those wedges can bend the door frame and you will get a little whistlin noise at high speed. still wrecker guys use them and brag, slim jims can get into 90% of cars still. (the trick is it cant be straight, bend it inwards towards the inside of the car before fishing for the rail). I was unsure when told this by a locksmith, I then watched him get into some tough vehicles with no more than 3 slimjims.