Whole heartedly agree with this from past experience and from being a member of St John in the past.
One of my previous places of work was opposite the High Street car park in Worthing. One day there was a jumper (fortunately, I didn't see him falling), but my training kicked in, grabbed my kit...
But normally those individuals at least stop for a moment before the panic sets in and then drive off. This cretin (does not deserve to be called person) just carries on driving like a maniac and as if he hasn't hit anything, let alone a person.