Had a near miss in SIN when the cab driver taking us to the arpt dozed off at the wheels, and we went from the slow lane across the middle to the fast lane, almost crashing to the divider. Luckily he got up in time!!!
Similar experience in LAX with our bus swaying in and out of our lane, again driver fatigue ++ going at 70mph!!
It can happen anywhere, especially when u r knackered..