in the prices at two different gas stations. how far away you are from the two stations. how many gallons your gas tank holds and how many per gallon your tank gets, it figures for you if it s worth it to drive out of your way for lower gas prices. $4.25 a gallon at this stage what does that mean for people? someone just filled up at this pump here, just a couple minutes ago. a painter. he filled up his tank. 22.8 gallons. it cost him $100. clearly, a lot of people paying a lot of money for gas now. a lot of people driving all over town trying to find the cheapest gas, but there are better ways of doing that than driving. go on the internet or use your smartphone applications it can help you save a lot of money. oh, my god. my jaw dropped. $100 to fill his tank? reporter: yeah. can you imagine that? i mean, this guy, just had an exasperated look on his face. he thought he d got it under