Until the vapors emitted from the exhaust are so clean, they can be piped directly to the riders face in the advent of oxygen deprivation, we will see more and more draconian design changes, all mandated by the worlds different versions of our EPA. Even the mighty Harley is now liquid cooled as stealthily as their engineers could manage. Remember, our EPA now legally considers what we exhale as a pollutant. We might be wearing our own personal cat converters before it's over.
