I-35 runs nearly 500 miles from Laredo to Gainesville, Texas. Driving along I-35 - through 18 counties and cities like Dallas, Austin and San Antonio - you get a good taste of what Texas is all about. “35” follows host Sara Schleede as she takes a road trip along Interstate 35 and documents the stories she encounters along the way, from oil busts and gentrification to cowboy culture and roadside attractions.