Sickening taxi driver...i will complain !!

I was running late for class becoz something cropped up. So i decided to take a cab down as i could afford to have lesson at hte original timing as we were meeting Carolyn for dinner before she goes back to London for summer programme.
The stupid taxi driver was dozing off at the wheel. There were a few times he was driving sooooo slowly that the distance between the car in front was soooooo huge. Despite it being green light, we were snailing. I thought it was just him. Until approaching the expressway, i dun know if he wanted to change lanes or he was not concentrating...the cab was moving unstably and the car behind was horning away. On the expressway, he was speeding at 120km/hr. No idea if it was on purpose. But i was worried. He was like fidgeting in his seat trying to keep awake. I wanted to flip a book but decided not to and kept an eye on the driver and road conditions. Thank god the afternoon traffic ain't that heavy. But it WASN'T STABLE !!!! End of expressway, more traffic lights, he dozed off at every light. The most ultimate one was before reaching PS. The lights took quite long to turn green. HE FELL ASLEEP AGAIN. When it turned green, he was still sleeping. I called out to him at least 3-4 times and he didn't hear me until the cars behind horned like nobody's biz. I was sooo pissed off in the cab that i scolded him before i alighted !
I am in the midst of drafting my complain email. If he doesn't want his life, i got nothing to say. But i dun wan to pay for the service and put my life and other road users' life in danger. Taxi no and name of driver noted....i hope comfort does take action. Not being racist but...it was a M driver.