Personally I think all of the cars here are phreaking ugly. I'm much too humble. As for aesthetically pleasing, I really like the:
To me there just is no car more beautiful-looking than this car. Sure, it doesn't boast tons of power, but I think it's the nicest-looking car I've ever seen. Very humble, and aggressive in an extremely subtle way. If you like to pretend that a car looks nice for it's power, when really what you like about it is its power, then the McLaren F1 wins hands down:
I know it was designed to produce down-force, but I think it is ugly. I bow down to its power, though.
