We'll leave it up to you to decipher the name — our first reaction was "Yikes!" — but if you're looking for an eco-friendly urban ride and don't mind its unusual design, the YikeBike ($2,000-$3,800) is a fine choice. Powered by a nano lithium phosphate battery that can be charged in 55 minutes, the 22-pound YikeBike offers a range of roughly 6 miles and a top speed of 14 mph, with a crazy folding design that sees you sitting atop with handlebars near your hips, a 20-inch wheel in the front, an eight-incher in the back, and the world around you. Available in carbon fiber and aluminum/composite forms and multiple colors.
Worried about burning up fossil fuels while you're out enjoying the water on your jet ski? Ditch it and pick yourself up an Aquaskipper ($500). Powered by your own "hopping" motion, it allows you to get some exercise as you propel yourself across the water at speeds of up to 17 miles an hour. The 'skipper is big, but since it's made of lightweight aluminum it weighs only 26 lbs., making for easy assembly, disassembly, and transport to and from the water.