hell, I'd like to walk to work everyday. Save money and earn a few carbon credits. But just check out how the municipal authorities and old habits let me do it. From home to office is just five kilometres, but there's the heat. So you need the airconditioned comfort of the car. And, of course, the prospect of being gored by an errant bull is not particularly inviting. Other hazards are ubiquitous. No pavement space and an uncanny resemblance to an obstacle course whenever you venture out. So we come full circle: why walk, just buy a car and turn on the gas. Four wheels are better than two legs.

Wrong assumption. For all reasons two legs might actually be the better option