Just to clarify what happened. I was the 2nd row back and saw everything up close and personal:

The guy in the car came past our group screaming about how we should get off the road. He then deliberately rammed the front two riders with the side of his car. He didn't slam on his brakes, he didn't come too close trying to buzz us, he turned into our lead riders to run them off the road. It was a miracle that no one was sucked under his car.

An intentional assault with a motor vehicle is no less dangerous to a cyclists life than an assault with a gun. 10 years would be entirely appropriate in this instance. A cyclist is totally at the mercy of a driver. If you try to dodge an attack by a person in a car, chances are you will crash and sustain severe injuries regardless of whether or not you make contact with the car.