I've tried convincing people to switch to mass transit as a way of reducing the amount of CO2 we're producing. However people frequently respond with how inconvenient it is. Although being a passenger does bring the opportunity to read or chat on the mobile phone safely, it is less flexible than a car.
To help prevent the extinction of our species (and millions of other species), all of you car drivers should be pushing congress to build a space elevator so we can start putting mirrors in space to keep our planet temperate.
This is less absurd than it sounds as one of my coworkers mentioned that a recent study predicted the elevator should cost between 10 and 50 billion dollars. Yes that means for less than the cost of the Iraq occupation we could have a space elevator.
(And even if we did switch to smaller more efficient cities, it can't be a bad thing to have a space elevator).
Oh yes, the background hypocrisy process in my head just pointed out as I sit next to my air conditioner and multiple computers that I should be agitating for the elevator so we can have solar power satellites. Wonderful guilt free satellite power plants to keep me in life giving electricity.