translates to higher gas prices here in the u.s. so we thought we'd spend some time on the things we do to get better gas mileage and save money. there are a lot of suggestions out there. some are good ideas, others just plain crazy. here to help us separate the facts from the myths, robert sinclair jr. of the new york aaa. good to see you, robert. let's talk first about what are some things you can advise right off the top here to get better gas mileage? >> well, vehicle maintenance is very important. we don't do tune-ups, per se, these days, but whatever you have to do to make sure that it's in optimum running condition, you should do that, take it to the technician and let him do those things. some things that motorists can do themselves include checking tire pressure. it's very critical that your tires be properly inflated. the governmental study found fully a third of us driving around on under inflated tires and for every pound per square inch that your tires are under inflated you lose 1% of your gas