I could swear I read that in order to get the grace period to keep selling non Euro 4 compliant Busas (or any bike) thru 2018, the manufacturer had to agree not to continue selling the bikes in areas not participating in the Euro rules after 2018. The penalty was being banned from selling bikes in the EU, which I can't see Suzuki doing. I can't find that now though so maybe I dreamed it up.