The Mayor Of London, Boris Johnson had what he describes as a near-miss with a lorry whilst scoping out some new bicycle routes in London.
As the lorry overtook Boris, the back door pinged open and hooked the windscreen of a parked car, dragging it some distance before coming to an abrupt stop.
Here is the CCTV footage:
http://news.bbc.co.uk/player/emp/external/player.swf