Tricycle

The pedal-powered Popemobile concept from Yannick Read of the ETA

Environment

ETA offers to build pedal-powered Popemobile

Yannick Read of the UK's Environmental Transport Agency has designed a pedal-powered Popemobile.

XYZ Spaceframe Vehicles – this one shown with a trailer – incorporate weather-resistant and lightweight frames that are made using standard aluminum tubes

Environment

N55's spaceframe tricycle can be built at home from plans

Danish design studio N55 has created a series of open-source human-powered vehicle designs that can be built at home.

Tom Weis calls for a 100 percent green electricity grid for America by 2020(Photo: Kim Ream)

Environment

Rocket Trike finishes 2,500 mile journey for renewable energy across USA

Renewable energy advocate Tom Weis concluded a 10-week ride across America in his pedal-powered hybrid electric-assist “Rocket Trike,” collecting opinions and signatures from people in support of a 100 percent green electricity grid by 2020.