Okay, I have to put my two cents into this discussion and say - Don't be that guy! DO NOT be that guy!
As a person who has previously worked in retail environments, there is nothing worse than an entitled customer thinking they have the right to be in a place of business until the very last second of the posted hours. You are a guest in a place of business and as much as you may have "just wanted a little look around", the people that work there are anxious to start their time away from the place.
Consider the thoughts of the people working there when they see you pull up at 10 minutes to close. Are you going to buy a car in 10 minutes? No. Is there anything you can possibly do in 10 minutes at a car dealership? No. Are you going to look around until probably after closing and waste the time of the people who want to get their personal time off started? Probably.
So the salespeople, who probably work on 100% commission, do not want you there. Same goes for managers or any other employee who's income is based wholly or partly on sales. The receptionist and any other hourly-wage earner certainly doesn't want you there, they wont be getting overtime pay for that extra time they put in past closing to take care of you. The boss or whoever has the keys to actually lock the place up certainly has better things to do, they know you won't be buying a car in 10 minutes.
I don't want to make this a personal attack on you, RRS-S3, I just want all people out there, (especially those who have never worked in a retail environment), to realize that it is actually you who is being rude in expecting to use the personal time of multiple employees at a dealership, or any other business, when you expect to come in that close to closing time.
END RANT!!!