I'm releasing version 1.0 of Road Blaster for SNES today, which has aptly been renamed to Super Road Blaster. Not all planned features and requests (persistent highscore saving, 256color intro video etc.) have been implemented, but I hope you enjoy it anyway:
Click here to download (453Mb download)
Mirror on superfamicom.org thanks to Matthew Callis.
Download includes game manual.
[Update] Archive has been updated to ROM version 1.1.