Gas-powered leaf blowers could be fine, but 99% of the time they're awful, cheap, horribly-maintained hunks of junk that emit horrible clouds of smoke that just floats at ground level for 15+ minutes. Next up ban non-electric cars in the city limits.
Many big Chinese cities banned gas motorcycles and scooters long ago. Taipei did not. You can smell the obvious difference. Electric buses make a big difference too.
