While they “could” still steal my catalytic converter maybe w/ a midget and/or small child. Using a curb along w/ my side steps on my Element, there is only about a 2-3 inch gap to get under the passenger side of the car. Trying to get to the cat from the driver side is blocked by the trans-axle. Unless they are using something smaller than a battery powered reciprocating saw for the cutting, this should hopefully stop any quick snatch’s of the precious device under my Element. Though this only works at parking lots that have any sort of curbs. The first lot my cat was stolen from was barren of any sort of features short of pot holes.