Decent and fun mappack, but I have several pros and cons about chapter one:
Pros: The voice acting is very decent and I love that you got someone who can do a perfect impression of SatAM Eggman (and let's not forget the fact that he sang win the race as well).
Each level has a different feel, and makes sense with the story and what's going on in the moment.
the Green Hills stage surprised me and i like how you did an entirely abridged version of the first movie in a sigle stage.
Con: While I love the stages, the case doesn't go the same for the songs used; I'm not a big fan of the songs used, mostly the ones used in Jungle Crash Site and Boot camp, as they seem unfitting with the theme.
RUN needs a little adjustment with characters without speed caps (like Pointy Sonic for example), as the characters go at high speeds and become uncontrollable.