When trying to predict the future, I always like looking at the past. I look at 86 competitors and where they are at now, I came accross this craigslist.
http://corvallis.craigslist.org/cto/2791889837.html
Car Background:
http://www.edmunds.com/hyundai/tiburon/
So if I buy the 86 brand new, I drive it daily for six years, and go to sell it and get about what 40% of my money back? 30%? I'm guessing if I put all those features on an 86 it would be closer to 30%. Obviously you get some attention for having a unique new car as well which is always nice.
When I crunch my own economy numbers it seems like roughly the equivalent to spend 5-10% of my income over the next six years on a well running fun car that I WANT to drive. Honestly, that sounds like a pretty good idea.