Doesn't need to be moderated! Start a list and we'll add to it!
I think at the moment we have semi agreed on: -
1) Ferrari 250 GTO
2) Ford Mustang (we need to decide on a type; my vote would be for the 1965 Shelby Mustang GT-350)
3) Ford GT40
4) Mini (which variant?)
5) VW Beetle
6) Porsche (356A Speedster? 550 Spyder? 1973 2.7 RS?)
What about the Lotus Super 7? E9 CSL Batmobile?
Others?
(the above are in no particular order... we can argue that when we have agreed the top 10

)