Drivers in Door and Kewaunee counties can fill up their gas tanks for less money.  Prices in Sturgeon Bay fell as low as $1.99 per gallon for regular unleaded on Friday.  Suppliers told Parv Jandu, the owner of Jandu Petroleum, with eight convenience stores in the area that the drop in the stock market has had the most significant impact on lowering gasoline prices.  AAA says another factor is that OPEC and non-OPEC countries have not agreed to cut production of oil overseas.  The average price of a gallon of gas in Wisconsin is about $2.15.  The last time the price at the pump fell below $2 in the state was in December of 2018.