Besides a Jeep there are two other vehicles that offered removeable doors, that I know of at least, the early 70's Ford Bronco's and the old Toyota Land Cruisers. ALL 3 vehicles have interior roll bars not because the doors come off but because the roofs came off. I guess if you really wanted to put deep thought into the strength and safety of removing the doors off your XJ, I would say the doors are adding stability and support to the entire uni-body structure of the Jeep. Whereas the other vehicles I referred to rely on their frames not the body 'tubs' for strength. However, as most guys said, it really depends on the cop, and if your rig looks set-up for it. Maybe a 5 point harness, those add on tube style doors, maybe. Something that doesn't make it look like your at risk of falling out while driving. I don't think someone with a bone stock ride, cushy seats, and the factory seat belt is going to pull that off, ya know. Just my .02