Probably the rarest exotic that I've ever seen was a real Viper GTS-R. I'm not even sure how many of them that Dodge made, but I saw one parked in a lot off of Rt. 17N in Mahwah, NJ. I was driving next to a Porshe RUF CTR-2 on my way home from work about 2 months ago. I let this guy get in front of me to merge onto the highway and as soon as we hit the highway he took off. I'm talking city blocks in a matter of seconds. It was pretty much the most awesome thing that I've ever seen.