Logically speaking, it is impossible for the good times to continue forever. KPaul may be wrong about the date, but there *will* be a downtown for Harley in the future, the question is simply when.
My guess is about when the internal combustion engine starts to see real competition. Seeing as a new company just introduced a two-seater electric roadster that will do 0-60 in 4s and go over 200 miles on a charge, methinks that day is closer rather than further away.