Gas prices are high because more and more people are on vacation like in the summer. ans also more and more people are getting cars. Also, gas stations like speedway keep track of how much people and money they get each week so the more people they get. The more the gas prices rise.
Prices are driven in large by supply and demand, speculators (traders) jack it up when they think the oil supply may be interrupted, Iran for example. Oil companies deliberately keep production stock down so when summer comes they raise the price, pretty much every holiday to! the more we need the more they demand!