There's nothing more frustrating than when you're rushing home to the sanctity of your own toilet and you're hamstrung by a seemingly simple snag like a car key that won't come out of the ignition.

Dear Doctor: A couple of weeks ago I put the key in the ignition and I could not turn the key. I called for road service and the serviceman used a small piece of wire and banged around the key ...

It sounds very much like the ignition barrel has failed and is jamming the key inside. But it could be something else, too. Modern cars often have an interlock between the gear selector and the ...