@Shawn, while I can't see any sense in having more cars than drivers, a single car won't work for most families in rural areas.

My work is 18 miles from home. My wife's is 22 miles. School is 8 miles the opposite direction. My wife and my schedules do not match up.

Get new jobs? There literally are NO jobs available for decent pay more than 5 miles closer and none at all in my field which are closer.

Move? Were I live now I have a garden and raise chickens (both meat and eggs.) Reducing CO2 created producing and shipping those things. Plus I can actually eat the stuff without reading its label. Things I am not going to give up.

The solution, for us, would be very high MPG vehicles. Public transportation just won't pay here due to lack of enough potential customers.