Nice spin on it!
I think you did the original song justice. You were able to keep that "Classic Sonic" feel to it. I hope you do find the time, or drive to redo it another way, or extended it. At 0:14 and 0:39, I can picture Sonic rolling right through Dr. Robotnik's robots with ease. Nice job on the tune.
Please contact me if you would like to use this in a project. We can discuss the details.