You know how sometimes you might be driving down the motorway, and on the opposite carriageway you can see that 'something' has happened, so you slow down a little and try to look over while still concentrating on the road ahead, trying to get a look at what happened, and you might see a set of blue flashing lights, and/or a vehicle obviously stopped or crashed, but you don't get to have a really good look at it, and within a matter of seconds you're far enough down the road that you can't see the incident anymore, and you get your speed up again to the prevailing traffic conditions......