Arguably one of the best ways to get around a city is a scooter. It requires zero physical effort, very little cost of entry, and very little to maintain and fuel - and in some states, it doesn't even require a special license.
Now, for the greenest drivetrain of all, a human-electric hybrid. Not the first, mind you, but one of three new ones from Schwinn. The Campus, World GSE and Continental models are all electric-assisted bicycles, ranging between a modest (hah!) $1,499-$1,999. They come with 21- and 24-speed transmissions for your legs, and a 24V 400W electric hub motor in the front wheel, controlled by a throttle on the handlebar, which itself can propel the bike up to 18 mph. Range from the easily removable lith