I want to know the answer to the following question:
How long have bus tours been available to tourist of Myanmar ?
All the background I'm provided with is that "According to the website Lonely Planet, getting into Myanmar is problematic: "No bus or train service connects Myanmar with another country, nor can you travel by car or motorcycle across the border – you must walk across.", and states that, "It is not possible for foreigners to go to/from Myanmar by sea or river.". Is that enough to answer the question?