HJ said:
On the way home I turned on to a road with traffic calming speed ramps closely followed by a car. The road was wide with no other traffic, the driver decided that he had to pass the cyclist. I was cycling at about 20 mph and just stood on the pedals every time reached a ramp and maintained my speed. Whereas the driver would brake sharply at each ramp, then zoom up along side my just before having to bake hard for the next ramp. It was highly amusing...

On my commute, I have about a mile long stretch through a housing estate with ramps like this every coupla hundred yards. I often get the amusement of the situation you've described HJ. Eventually, they get fed up and don't brake for a bump, their car invariably making a comedy grinding noise as they launch it over the bump.
Course, if they don't do the same high speed bounce over the next couple of ramps I'm all over the back of them like Molecule Man said. If they do go for the repeated high speed bounce, they "disappear off" into the distance.
Until I invariably catch them up at the traffic lights at the edge of the estate, get off the bike, push it past them on the path, cross the main road that they're joining and head off down the bridleway over the other side.
