A few basic ways to lessen the use of gas: Using common sense. If you accelerate too briskly, you waste gas. Staying at a steady speed is best, even if that is 75 MPH. You are going to get better mileage at 75 MPH if you are doing a steady 75 rather than going from 55 to 80 and back repeatedly. Another way to waste gas is to wait too long to upshift--accelerating to 35 MPH and leaving it in second is asking for an empty tank. Better to get into at least third gear as quickly as possible, and then ease off--and, if you are going more than 35 MPH and steady, you can put it in 5th gear (or 6th, with those new 6-speeds). I don't know how many witlesses think it's the end of the world to put it in 5th gear unless they are going 60 MPH or more.
I also recommend taking fewer trips--combining errands. And when you do go, make sure your tires are properly inflated. Underinflated tires are a waste of gas, plus a safety hazard. Tuning up your engine improves your mileage--spending $80 or $100 on a tuneup can save you hundreds in gas. Lose that unnecessary weight--unless you live in places where May or June snow is common, you don't need that snow traction kit (especially if you are in the south, where May and June snow is almost unheard of). Do you really need that bag of traction sand or cat litter when it is 98 o out?
Other things to look into: Walking, getting a good bicycle and learning to take care of it, or using public transportation. All of these use less gas than using your own car. If you car pool, that can use less gas per person--but not if you have to travel 80 miles out of your way to pick up someone on a 15 mile trip. Getting a taxi is usually the most inefficient option. And, if you need a car, use common sense and get one that matches your needs. A small car is not always the best option--making one trip in a SUV is better than three trips in a Prius or Fit.
Of course, all of this should be put in perspective. Why is gas so expensive? Why is food so expensive? Why is clothing so expensive? I believe it's because the dollar is in a transition to becoming toilet paper. This is happening worldwide, but the Euro, British pound, and the US Toilet Paper Dollar are taking the lead. The Swiss Franc seems to be holding up better, but it too will eventually collapse. Just look at gold and silver--unless the pigs at JP Morgan go molesting silver prices (driving gold and commodities down, at least on paper), they are going to get a lot more expensive. Measured in physical silver, gas prices are actually going down. Even after JP Morgan molested the silver price by doubling the margin requirements on existing contracts (forcing sale of paper silver), physical silver is still worth more than $50 per ounce. (Just look at the auction sites and see for yourself what an ounce of silver is actually going for, or visit your local coin dealer).
Finally, I am hoping this puts a crimp on the witlesses' field circus activity. They seem to waste more gas than anyone else, and they have all those stupid rules against hedging against inflation or making more money. They are going to be unable to afford gas when it reaches US Toilet Paper $6 or more a gallon, let alone a nonillion or more once hyperinflation blasts off. Since they don't believe in buying investment gold or silver, they are going to be vulnerable when that happens. Then, watch field circus plummet.