Crashday has no story mode, right? How can a game with no story remind you of I'76?
Regardless, Crashday looked quite neat from the trailer. I was a little bit sad to notice that the damage seemed to be textured only -- judging by the trailer, there isn't any model deformation at all, which is a shame for a game apparently based in significant part around smashing up cars -- but it still looked pretty slick.
IIRC the track editor allows you to create your own custom track components, which is one thing that it has over Trackmania. Not that TM is especially limited or anything