My guess is it's a bad ignigtion switch...

[bugbor]

^^lol! You mght want to carry that spray can in the car in case the problem reappears.

Used two different kinds of spray and don't know if it was one or the other (or both) that did the trick. Somebody needs to experiment to find the magic combination for things like that and sell it as FixYourFesty Magic Lotion or somethin' like that. Maybe FY Jelly lube? :^)