Animal sounds in the background right of the bat! :D Growls and roars and soon a building tribal thunder...
I miss some of the animal samples as it really gets into the groove though! Though you get them again towards the end it feels like you could've worked a bit more with those. The whatever-that-whistle-like-kind-of-instrument-is-called fits in nicely though, and I love the rhythm.
It's a jam man! Jurassic Traffic such a suitable title too...
Could imagine this playing in a particularly uplifting scene in something like the Ice Age movies.
Good stuff.
-cd-