i hate when it would end up with leading a convoy. if the roads are fairly open, pull over whenever you pick up 4 or 5 cars, or when it's been a while. you look considerate for letting them pass and they don't have to be stuck behind a learner. (not being mean, here there are speed restriction for learner drivers, so on a highway they can legally travel 20km/h faster than you, it can be frustrating being behind one although it's nobody's fault)