This is the 1957 Aurora. We will never know what the public would have thought about it, as only one prototype was built, and it didn't work well enough to make it to its own press conference. Now wait, before you argue that the Aurora can't be the world's ugliest car, check out the huge collection of ugly cars at Dark Roasted Blend. They are all ugly in their own ways. Link

(Image credit: GATSBY Magazine)