Amarillo is a classic drive-in, drive-through Route 66 city where most major sights — Cadillac Ranch, the Sixth Avenue Historic District, and the Panhandle-Plains Historical Museum — sit within a 15-minute drive of each other, making it naturally suited to a short, low-cost trip. A rental car remains the most efficient base tool here: the city has limited fixed-route transit, the airport is small, and the headline day trips (Palo Duro Canyon, Lake Meredith) are not realistically reachable on public buses.
The smartest budget moves are timing (shoulder months lower hotel rates and avoid summer heat), staying along the I-40 / Route 66 motel strip just outside downtown, and treating steakhouses and barbecue joints as one anchor meal per day rather than three. Free attractions are genuinely strong here — Cadillac Ranch, the Big Texan mural, the Route 66 district walks, and most museum donation days carry zero entry cost.