I can think of worse, someone trying to convince you your car is something it isn't.
The R34:
"OMG, that's a GT-R."
Me: "No, it's a four GT-T."
"I know my Skylines."
Me: "I can promise you it's not."
"It has a GT-R engine though."
Me: "No it doesn't."
and so on and so forth.
N15:
"Is that one of those AWD Pulsars."
Me: "No, it's front wheel drive."
or
"Is it turbo?"
Me: "Do you think the front mount is there for looks?"
Eventually I just give in and let them believe whatever makes them happy.