Now, now, boys(?)
Your "techniques" in advising people lack any peripheral vision. OK, the op asked specifically about the 24 (or whatever) hour "rule" (almost certainly used as an example). Do you think that if there were other things that could happen (ie fatal flaw in paperwork etc) no matter how slight the possibility, that they wouldn't want to know about it?
Do you honestly think that because he only mentioned the 24 hour rule that he WOULDN'T BE INTERESTED in any other ways that don't involve getting permission from the dealer to get out of the deal? See, if he DIDN'T know, for instance, that if the dealer was unable to get the deal done without a resign and that he HAD the choice of whether to do so, he would've blown a sure-fire exit from the deal. I repeat this for our viewers, as you and jet are unable to grasp the concept.
That'd be like some tourist visiting your town and asking if, say, THAT road over there would take them to a certain destination. WHAT are they really asking? If it wasn't the right way, you guys would just say "no", even if the proper street was only 30 feet away, you wouldn't tell them because they only asked about THAT road.
My faithful friends, what do you think would be more important to the op, or the fictional tourist in question, achieving their goal, or how they achieve it?
I think I'd take a car salesperson with some imagination over a couple of solipsist wanna-bes. Hey, maybe there's a good Matlock marathon coming up! Merry xmas!