Ever had one? I had one last week... Was driving to work, on this particular road where it begins to queue up so I was doing about 40km/h about 20 metres behind this other guy, next thing I know I'm about 5 metres, he's just about to stop so my first instinct is to slam on the brakes hard enough to make the car turn to the right a little bit . I literally do not recall the period of time in which I caught up that 15 metres difference. I don't remember my eyes closing either. I'm pretty sure it's not the first time I've had a microsleep either. A few years back on the way to TAFE I had had a late night and on this particular road I was fine, next thing I had overshot a corner and didn't realise how - fortunately I recovered quickly and didn't get into any grief. Scared the crap out of me though! I'm sure I've had more than a few on the freeway. It seems there's not much I can do about it though? Caffeine doesn't wake me up, it just sometimes keeps me up so a coke in morning (I hate coffee) is no use to me. I also seem to be incredibly tired no matter how much sleep I get - 6 hours, 8 hours or 10 hours. I don't particularly consider myself a danger on the road as I make an effort to make sure I am completely aware of everything around me and ahead on me, and yet all that can be undone with half a second of involuntary unconsciousness... Anyone else had a similar experience?