$1.989

I drove past a gas station last night that was selling regular unleaded gasoline for $1.989. One month ago it was $2.789. That is an 80 cent drop in 31 days, which seems rather remarkable to me. Could it be that the price from one month ago wasn't really justified? Could it be that all of the oil companies are in league with Evil Republicans^TM and gas is only cheaper because of the upcoming elections? Or could it be that St. Louis, MO simply rocks that hard? Oh, yes, we can rock <$2 gas very hard, indeed.