It is definitely Merc drivers!
I work in a building that has several companies in it. There are 2 car parks - the 'Directors' car park (spaces rented to each co as part of the lease) and the 'workers' car park (alot further to walk, pay and display for everyone else).
I've got a space in the 'Directors' car park, 1 of only 4 for our company. I drive in this morning - to find a Merc parked in my space, and a bloke standing beside it on his mobile. I park in my colleagues space and approach this bloke with the mobile. Turns out its his car, so I ask him politely to move it to the other car park, to which he looks down his nose at me, my Pug, scoffs and refuses, questioning why I can't leave mine where it is. (That would really please my CEO!)
So I said fine, let's get the Security Manager to sort it. We both walk into Reception - Sec. Mgr explains, points out that the signpost for visitors car parking and the bloke then agrees to move it - hooray! Am a bit p***d off at this point, as have got prep to do for an interview and am running late now - yep, you guessed it - this guy in the Merc is the bloke I am interviewing! He went a little red when I introduced myself!
Has the right skills and experience for the job - but his attitude would definitely be a problem - he didn't even apologise.