Some good ideas going around here.
I don't personally like to correct strangers if they are wrong or make an incorrect statement. For example, if I said, "It's PORSH-
UH!" They'd probably go home thinking, "Snobby ass Porsh owners... So rude!!!"
Maybe I'll just tell them it's the fastest car I've ever owned .. since it is.
"Not as fast as my Ferrari" is a good one as well.