In 2009, an ambitious, multi‐state project started in Knoxville, Tennessee through a grant funded by the Department of Energy Clean Cities Program.  The I‐75 Green Corridor Project began with the goal of allowing any American driver to traverse any portion of I‐75 and be able to make their entire trip running on either biofuel. The project has significantly increased the availability of the biofuels E85 and B20 along the entire length of Interstate 75, which runs from Sault Ste. Marie, Michigan at the Canadian border to Miami, Florida. Biofuels stations were added with the intent of filling in gaps in biofuels access along the corridor and adding more stations in metropolitan areas, so that a station of each type could be found no greater than 200 miles apart along the entire length of the interstate.