[dharmab]

> There is little benefit to the environment to switch. Modern motorcycles have been sold with catalytic converters for decades, and they also get 40+ MPG.

Previous emissions standards for motorcycles were much lower than cars. To the point where a bike getting 50mpg and carrying one person output more pollution than a sedan getting 25mpg and carrying an entire family.

This has been fixed with Euro4's introduction for the 2017 model year (which is why so many bikes were redesigned that year with huge exhausts.)