A four-letter word

The black 4x4 was being thrashed along the lane as through it was off-road, and by a driver who appeared to have downed a handful of amphetamines and half a bottle of Jack Daniels. 

It came barrelling past me; briefly mounted the verge, creating a cloud of dust; and  disappeared around a bend.  But it was waiting, impatiently,  at the next junction. 

I came up behind it and was faced with a sign on the back: 

 “How’s my driving?  Ring 0800  F*** you.”      

What to make of the effect on children who see this?

And what to make of someone who sees violent driving as something to be championed and defended?