Could driving less improve the Environment? More specifically, if we drove less, would it just postpone the inevitable, or would the damage that has alreghty been done, pollution, ozone layer, melting glaciers, be reversed over time?

Cars and all other TRANSPORTATION as a percentage of emissions contribute about 28%.
http://www.pewclimate.org/global-warming...

Man made CO2 accounts for like 3% of the total CO2 put into the atmosphere.

Do you really think that is enough to change the balance of nature?

No. There has been no damage. This is all alarmism foisted upon us by the usual agony merchants (like Al Gore).

Love Jack

If America stopped making their cars so damn big...

duh?