First, favorite vehicles I have driven myself, would be my old 1989 Toyota pickup truck. The engine was indestructible, probably one of the most reliable engines built. Also, not everything is about speed. With the right modifications, for under $7000, I could climb a 60 degree incline while walking beside the truck. It would be the ultimate road legal camping vehicle.
Dreaming? I long for a 1966 Shelby Cobra 427SC. It would be the first car I purchased if I ran into near unlimited money.... If I could find an original one. If not, I would settle for an exact replica. My uncle almost bought one in 1966. He had the cash in hand 3 times and all 3 times they upped the price on him until he told them to blow it out their.......
I don't know what my favorite would be other than that. If I had the money, I simply don't like all the fancy technology of today's world and prefer simplicity. I would buy something like an old Datsun 240Z and set it up for track running. I too think the Saleen S7 is quite a sexy car, but I'm thinking realistically and would choose a car that I could enjoy on the public roads as well as the track. Something like a Saleen would be trashed half a mile from my home if I drove it on public roads. Thus I would go with old school and restore, rebuild, and build up to what I wanted.