KNOXVILLE, Tenn. (WVLT) – East Tennessee is home to three interstates, I-75, I-40, and I-81. In downtown Knoxville alone, the Tennessee Department of Transportation said more than 100,000 vehicles travel along the interstate, with nearly 16,000 being semi-trucks. “When I finish a drive I’m exhausted, I’m mentally exhausted,” said Laural…