From
this press release, comes the news that,
Under the proposed EPA regulations issued on Sept 15, 2009, the Zero S and DS achieve an equivalent of 455 MPG and generate zero grams of CO2 per mile.
Did Zero not learn from negative reaction the Chevy Volt got from their "230 mpg" claim? Also, I don't think the "proposed EPA regulations" had an mpg calculation method that applied to motorcycles. I'm pretty sure (but not certain) that it was passenger cars, light trucks, and upwards.
Plus, the "zero grams of CO2 per mile" must depend on charging from a solar or wind powered generator, and everyone has one of those in his/her backyard.
I'm not anti-Zero... there's plenty of room in the electric motorcycle market for many players, but this kind of claim ends up making the whole EV industry (and customers) look ridiculous.
I'm not sure who they're trying to reach with that number, anyway. Most of the Zero owners and future owners have picked it because of its design, the ride reviews, and the general idea of "green transportation." Brammo and Vectrix should come out with "1,000 mpg!" and "actually vacuums CO2 from the atmosphere" claims.