Rising gas prices may discourage some travelers from packing up the car in the weeks and months ahead. Yet, the American road trip remains an enduring tradition and in the end can provide an affordable vacation option. Here are five ways to hit the open road. 1. Colo-road trips The Colorado Tourism Office has made it easy for road-trippers to explore the state’s 24 Scenic & Historic Byways. The tourism office’s microsite includes an interactive map that enables travelers to explore options by region, interest or season. Travelers seeking inspiration can also access insider tips and side-trip s…