Climate change is a very serious problem. A primary source of greenhouse gasses is personal automobiles. Even before petroleum becomes too expensive, we need to move away from this addiction. We need leaders brave enough stand up to the asphalt lobby and to refuse to support continuing expense of public monies upon systems that facilitate these gas guzzling wastrels. If we saddled motorists with the cost of cleaning up after themselves, alternative transportation would get more popular quickly.
Why is this important?
We'd like to use efficient modes of transportation, like walking, bicycles, and transit, but there are too many cars in the way. Every level of government subsidizes the least efficient mode of transportation, the individual automobile, by spending our taxes on more pavement and requiring designs to accommodate petroleum burners.