G'day folks For years you have swallowed the line that 2-stroke bicycle motors are dirty, polluting little monsters and not long for this world. Right? WRONG!! A bicycle fitted with a 2-stroke bicycle engine kit is one of the most climate-friendly motor-vehicles on the planet. I'm in Australia and keen to raise this issue both in Oz and elsewhere where you feel like a second-class citizen and have to sneak around on back roads to avoid the cops. For some odd reason that I don't understand, the very low carbon dioxide (CO2) footprint of motorized bicycles seems lost on just about everyone. Air quality may be affected by 2-strokes in some cities, but the very low carbon dioxide emissions that contribute to greenhouse and climate change make MBs very climate-friendly. Anyone want to discuss this?