You may have luck with vibrating the key with something like a vibrating orbital sander with no sand paper on it or other vibrating device while turning the key. Locksmiths use a picking gun which vibrates. If you do get it to turn don't turn the vehicle off, disconnect the battery and use the stop lever.Don't count on this working twice!! Until you have it safe home and can review the lock cylinder replacement threads.Easy if the key is turned , very hard if you can't move it. Good luck

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