Oh, and it gets you discounts at a brothel in Berlin. Can't beat that. Ride your sustainable bike to the Maison d'envie brothel for some global warming that'll melt poles.
As The Telegraph reports:
"A Berlin brothel has come up with a novel way to offset the impact of the global economic crisis and target a new group of customers at the same time - offering a discount to patrons who arrive on bicycles.
"The recession has hit our industry hard," said Thomas Goetz, owner of the Maison d'envie brothel.
"Obviously we hope that the discount will attract more people," he added. "It's good for business, it's good for the environment - and it's good for the girls."
Customers who arrive on bicycle or who can prove they took public transportation get a €5 ($7) discount from the usual €70 ($100) fee for 45 minute sessions, Mr Goetz said. He said the environmentally friendly offer was working a charm.
"We have around 3-5 new customers coming in daily to take advantage of the discount," he said, adding the green rebate has helped alleviate traffic and parking congestion in the neighbourhood.
Germany is one of the few countries in the world where prostitution is legal. It has about 400,000 prostitutes who, since 2002, have been allowed to enter formal labour contracts."