I dunno... look real to me. About the only evidence to me suggesting it fake is that dude was pretty deliberate about stepping into the street. That and as soon as he get hit the music stopped. The music was supposedly coming from his car while he pardna videotaped right? Why would the music suddenly stop... or who in they right mind, would think first "let me turn this down, then go see if he alright"?
But the flip side of that argument could be that:
a) he was stupid... ventured too far into traffic.
b) he wasn't hurt very badly and they could laugh about it afterwards, editing the vid to dub the music over the action; accounting for the abrupt stop when he got hit.