Bob Schroeck wrote:
It might work that way, but frankly, if I allowed for it, I'd have to figure out where in the last chapter of DW5 to wedge it in, and worse, it would require Helen and I to rewrite chapter 1 of DW13 to include what amounts to an entirely new character. As well as replot all of DW13 to account for it/him. No, I don't want to do that.

You are right.  IMO if the bike wakes up at all it will be long after Doug is (permanently) in the grave. There fore it is a non issue.