Whats the difference between burnout paradise and Burnout: Paradise - The Ultimate Box?

The wonderful thing about Google, is Google’s a wonderful thing.

I used my eyes and I read on those pages, mostly Wikipedia. It seems that the box comes with more cars, more tracks, offline multiplayer, the expansion packs, etc. Likely everything that comes with the game, with the ultimate name and whatnot.

There are only a few free expansions; the rest you have to buy. So I imagine the Ultimate box comes with some or all of the ones you would pay for.