Anyone who's ever sat down behind a steering wheel knows that one of the first things you learn when you start driving, is to expect the unexpected.It could be that the car in front of you has to come to an emergency stop, kids running after a ball that rolled on to the road, or an animal that wandered into the lane and put both it - and you - in danger.But while you might be expecting abrupt stops and unsuspecting animals, the road can get really, really weird sometimes - and there are some things no driving lesson can get you ready for.What are they? Read on to find out.