Do you ever find yourself coasting down a hill to save gas? More Americans are trying to improve their driving habits in order to save every precious drop of fuel.
"I have an LED readout on my car so it tells the average miles per gallon. I look at that constantly to see how i'm doing, " said Michell Pivetti of Danville.
"I just try to slow down, not just speed up to the light then hit it, " said John Lutz of Alamo.
There is a simple science to driving efficiently. UC Berkeley Mechanical Engineering Professor, Al Pisano starts with regular maintenance.
"You can get 3 percent better gas economy just by having your tires properly inflated, " said Albert Pisano.
Changing the oil, dirty air filters and squeaky belts minimizes friction. He also recommends accelerating slow and steady.
"The idea is to imagine an egg in between your foot and the accelerator. So you just press as gently as you can to get what you need out of the car and don't break that egg, " said Pisano.
Closing windows and putting up your convertible top reduce drag or weight on your car.
"If you still have 200 pounds of camping equipment in your car from your last trip, get it out," said Pisano. "The car is using extra gasoline carrying that extra weight around."
If you really want to monitor your driving efficiency, there's a new dashboard gadget out called the Kiwi. Developed by Paul Lowchareonkul, a 28 year old UC Irvine graduate. It monitors your driving habits, like smoothness, drag, acceleration, and deceleration.
/kiwi inventor: "We made it fun. What you try to do is obtain the highest kiwi score," said Lowchareonkul. "Then it displays the amount of gas you used and your savings based on your driving efficiency. It also gives you advice.