I wouldn't want to do that, because even if it's on perfectly, it will be rubbing the paint over time. That would annoy me to no end, just knowing that it's happening with every mile I drive!
You can put a small hitch on just about any car, and any rack you put on the hitch can be locked on with a locking hitch pin. etrailer.com is where I get my hitch related stuff. They have a selector which will help determine whether your car will take hitch, and what kind.
Karen
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insidious ungovernable cardboard