Motorhome Republic has a huge number of motor vehicles (along with 4WDs with rooftop tents) you can pick up in both Adelaide or Darwin. My tutorial to renting a campervan in Australia has tips for booking and saving funds. Any time you arrive at Alice Springs, admire the see in https://explorers-way-road-trip45507.ageeksblog.com/34222985/the-definitive-guide-to-road-trip-darwin-to-adelaide