Many people tend to see the world in a Manichean way. You’ve got the good guys and the bad guys. That’s as true within the environmental movement as anywhere else. So it is perhaps surprising to see that many environmentalists work together with unusual allies. For example, when it comes to car CO2 standards environmentalists and car drivers have the same interest; cleaner, more efficient cars are good for drivers’ pockets and for the climate. That makes the case for them almost irresistible.