It is nice to see a new quest mod. Got some problems but played through the end of the mod. Can't wait for the next update.
I've got a similar problem that ecobotstar, UE00 suffered.
My first save was after the removal of the mayor, by Depravity(Thuggy's) mod. Quest was bugged, no free ride and not starting quest.
So I tried to do it again with older save just before kick the mayor out. Almost no problem with Motorcycle quest. There's not much difference between these two saves except that mayor has been kicked out.
So, judging by these, I think that the state of the mayor is the cause of this bug. If I guessed it right, adding a step that checking the mayor's state and bypassing stage will be the solution. But I barely know about modding and script, so I'm not so sure about it.
Without this one, it was very smooth and cool. Please keep this up. Cheers.
As I'm not a native english speaker, what I wrote may not be good to understand. Sorry for that.