Good question. simple answer...
Ask ppl's opinions that HAVE the car. Not the ones who are jealous of it or drive a slower car. Don't let them fool you. Ppl buy vettes, porsches because they are sporty and supposed to be F_A_S_T. When they find out their salesman lied to them about their car is faster, handles betters, accelerates smoother, they become trash talking Viper haters..
Oh, and I love it! When you talk to them about their car, all of a sudden, they bought their car because it's more comfortable. I've owned many cars and I'll go out on a limb here and tell you that my Viper is the most comfortable daily driver car I've EVER owned! Lots of storage space (GTS), LOTS of looks!, Fast, Did I say FAST?, and be prepared to feel like a celebrity!...
Oh, and get ready for the ultimate question... "How much did it cost?" Oh, I hate that question..... I usually reply back with, "That's kind of personal, how much did you make a year minus benefits?" hehe, they hate that.
Lots o' luck!
Gerald