There are many ways to discover South East Asia . The road trip on your own is probably the best way to explore the remote areas as well as urban centers. The road infrastructure improves very fast and rental cars are widely avialable . Check visa requierments before travelling and provide international driving licence. Be aware that crossing boarders by car is more complicated than renting always new in the country upon arrival. Plan your road trip carefuly in advance , when travelling avoid holiday times in South East Asia . They always come with high prices and crowds everywhere. Road trips in South East Asia are rewarding and memorable. Just drive for it !