I've gotten quite a lot of valuable feedback after releasing version 1.0 and have been working hard on fixing any remaining issues.
Time to give you the definitive version, the biggest game on the system by far and the Sega Mega CD killer:
Super Road Blaster v1.1 for Super Nintendo! (453Mb download)
Mirror on superfamicom.org
Ok, maybe I'm 20 years late, but who's perfect, right? ;)