I always loved the beauty of the Spitfire along with the ME-109; the Navy’s F-4U; the Japanese Zero and the Wildcat. WWII planes were often things of beauty.
P-51 Mustangs are beautiful, too
I read somewhere that Harley Earl, who was a designer at GM, based a lot of his automotive designs on WWII aircraft shapes. That's probably why certain cars are so appealing.