WHAT'S THE PRICE OF GAS TODAY?  SHOULD I FILL THE TANK TODAY AND SAVE A FEW CENTS?

I HAVE BEEN UNABLE TO DETECT ANY REASON FOR THE YO-YO PRICE CHANGES OR THE REGULARITY OR LACK THEREOF.  LAST SATURDAY I DROVE TO LANSING. SUDDENLY LIKE A TIDAL WAVE ACROSS MICHIGAN, THE PRICES WERE UP AT EVERY STATION.  DOES SOME OIL BARON SOMEWHERE HAVE A SWITCH THAT TURNS ALL THE PUMPS UP OR DOWN?

MAYBE ITS A GAME THE OIL COMPANIES HAVE INVENTED FOR OUR AMUSEMENT.  TROUBLE IS WE ARE USUALLY ON THE LOSING END OF THE GAME.

CAN ANY COMPUTER SOLVE THIS MYSTERY?