Nobody could steal that car even if they wanted to, unless they knew the internal mechanical structure of the steering column. When I used the screwdriver method, the screwdriver did not go into the ignition or any other intuitive location you might be thinking of.

The key that was stuck in the ignition wouldn't turn to the start position, nor would it turn back to the off position to remove it. So it was a combination of connecting the battery then using the screwdriver as a lever in just the right spot in the steering column tilt hinge gap area to start it, and disconnecting the battery to shut it down.

I had never let anyone see exactly how I used the screwdriver on that car. Besides, it was such a rusted out beater, I could have parked it in a back alley in the Bronx and most likely nobody would have wanted to touch it, except maybe to steal the gas out of it LOL!