San Antonio joins hybrid-incentive trend.

SAN ANTONIO - Big is better and portions are large in Texas, but there's still room for the green and efficient. Environmentally aware San Antonians are getting the last laugh under a new program allowing drivers of hybrid vehicles to park for free at city meters, while the drivers of Hummers, SUVs and trucks still have to dig around for change. Park your hybrid at a one-hour meter? Save a buck. Stop at an all-day meter? That's $2 left in your coin purse.