Nationwide, gas prices have been on a free-fall, resting now at their lowest levels in four years and down 25 percent from last year. According to popular fuel price website Gasbuddy.com, at last check, the lowest gasoline in Beaumont was at Walmart's Murphy USA gasoline station for $2.27 In the last month, passenger car sales have gone up 4.5 percent compared to last year, according to automotive sales information.