nuts to that
So my car stops in the same distance as a people carrier traveling the same speed, though my brakes are significantly larger!?
Your missing the point...
Within seeing something that MIGHT need braking for, whilst you are still accelerating and not expecting the hazard...
It takes you more than .5 seconds to THINK "i need to brake".
Then take your foot of the accelerator.
And then hit the brakes.
And of course, even if you did manage that. You are still doing 55mph and the OP states that in that .5 seconds he then hit the water.
Of course the OP could be exaggerating figures but going on what he says, it seems unlikely he could of got on the brakes, let alone brake enough to mean he wouldnt skid into the kurb.
Or that is my take on it anyway.