He could have asked her to move, but he shouldn't need to ask.  She has no right to be in that space.  Obviously this is something she does often (she even says so) and from watching her reaction to his filming, she would not have been willing to move her car if he had asked in the first place (since he doesn't know "who she is" which means she believes she's entitled to spaces she does not deserve).  I don't believe he was immature in his reaction at all.  If anybody in the film is guilty of immaturity, it would definitely be her. Dead horse: you've already been discussing this and my comment is hours late.  But handicap spots are a big deal to me.  Just park a little farther away and walk; leave the spaces to those who are incapable of walking (you know, like war vets who actually deserve them).  Don't even pretend it's a parking spot unless you have the placard.