...heh, I know enough about this area to know what that does. And it'll cost you, hedgehog. Sean drives over the lava (the change to the tires was extreme heat shielding) and hits a makeshift ramp past it,
launching to an area
inaccessible to those who only go on foot. He drives past the underground
portion by staying up here and waits for Sky at the end of the zone, police siren off.
(By the way, the area I'm talking about that I got to is that huge wall that forces Sonic to go underground. In the hack Sonic Megamix, when you play through as characters who can fly, you can reach up there, and it takes you near the end of the level.)
*looks at character limit* Seriously? 9,999 characters? You think that's enough room there?