Could your next city car be a biofuel-powered jetpack?

The Martin Jetpack is the world’s first commercially available vertical take-off and landing personal flying machine, and while it may have a retail price and fuel economy comparable with a second-hand Lamborghini, if its combustion engine is powered by ethanol produced in an environmentally-friendly way it is likely to be touted as an efficient alternative to the car for journeys of up to 30 miles.

From an environmental perspective the potential advantages of this personal flying machine over a city car include reduced congestion, road danger, and parking space requirement.

However, the jet-pack creates pollution of a different kind; it is loud and city dwellers are likely to be unimpressed by the prospect of aerial roads.

The greenest commute?

A week ahead of Green Transport Week 2011 comes news of a London commuter who uses an inflatable kayak to get to and from work.