Mine are pretty humble by dream car standards.
BMW M3 4-door
Nissan GTR
I can afford both, but I can't rationalize the payments after the fact. Between gas, maintenance, insurance, and the simple inability to get the most out of them 95% of the days in the year... it's just not worth it for me.
My Evo X, which was a demo car with like 10k km on it when I bought it, is 10 years old now, with only 80,000km on it, to give you an idea of how much I actually drive in the first place. At the current pace, it might last me another 10, but probably at least another 5. Maybe in 5 years, I'll finally buy that BMW.