Just in time for a holiday road trip, gas prices in many places in middle of the country have dipped below $2 a gallon. And here in Missouri, close to the geographic center of the USA, is where drivers can find the cheapest gas as of Friday, according to GasBuddy.com. "As of this morning, there are 24 states with prices under $2 a gallon. But Missouri is lowest," said Patrick DeHaan, GasBuddy's senior petroleum analyst. Read more http://www.usatoday.com/story/money/business/2014/12/19/2-buck-a-gallon-gas/20652809/