I too came back from Korat to Pak Chong with my wife and baby and the taxi driver kept falling asleep...In the end I threatened him to stop the car, then drag him from the car and smash his head in (said in Thai)
He soon woke up..with the window down all the way...and me sat staring at him for the remaining 35-40kms of the journey..think he was too scared to fall asleep..

while I was doing my best

impression