Reminds me of that bit I read in one of Clarkson's books - he was attending a 'road safety how to drive properly advanced motorist jobby course day lecture things' and he lost any faith in what the instructor was saying when they told him the correct, safe way to overtake a vehicle is to move over to the right hand side of the road then change down a gear, then accelerate
Actually I'm sure i've seen a program on the police high speed driving thing and they do say pull out, ensure the road is clear then toe it.
Perfectly acceptable IF you are driving a powerfull car.
Think about it, you see a slower car, think its clear, boot it hard, pull out, its not clear so slam on to pull back in, risk hitting the car you are overtaking or a head on. On the other hand, you move over, way isn't clear you slot straight back in no drama or accelerate past.
Which is more sensible??
Obviously with an underpowered euro shitbox, pre planning and momentum is a lot more important, but if you are relying on momentum to get you past as opposed to power is it actually a safe overtake you are attempting??