Re: 600 miles = 1 Crossfire...
Last month I did a 2k round trip from west MI to CT, Saw one roadster on the way out. Saw two on the same day in Bloomfield CT. Saw two on my trip back plus an SRT6 roadster on the 402. By comparison I saw over a dozen Boxsters, about 20 Miatas, and more Beemers and A4s than I could count. Also lots and lots of Vettes.
It's nice to have an unusual and attractive car. I also drove about 1500 miles of the trip with the top down, even when running through a little drizzle.