There are buses that travel at night, but they're not comfy. i.e. they are not designed to be comfortable night-mode travel. In general, distances are too small

There are buses that travel at night, but they're not comfy. i.e. they are not designed to be comfortable night-mode travel. In general, distances are too small to consider overnight trips. Since there aren't many good roads in Myanmar, trips take forever, which makes overnight travel sensible.