This morning after I parked I watched another gentleman, a little older than me in a collar and tie, park his car a little further along the street, lock it, and walk away.  Then stop, stare at it for a few moments, walk back, and double-check that it was locked.  Then walk away, stop for a few moments, walk back, find he was outside remote-locking range, walk a little closer back, re-lock it, observe the flashers signalling that the locks had engaged, then walk off a little way, stop, stand there with body language that broadcast his thoughts loud and clear (“I know I locked it… but I mean, did I?  Sure I did, I’ve already checked… but maybe… but I know I locked it…”) then shake his head, win the fight with himself and depart.

So, it isn’t just me then.