No. It doesn't require anything outside general knowledge - although it could be a rubbish clue. There is a big clue in the amendment. The definition is 'driver'.
Been thinking about this one for ages now - the small animal combined with the learner might suggest the word: GOLFER - GOPHER with 'L' a driver is used in golf, etc etc. I'm having a problem, however, with the phrase 'run over' . If I'm correct perhaps you can explain the last bit of hidden text.
[Chalky] I believe you've got it: Small animal = GOPHER. Small animal said = GOFER. "Run over by learner" means insert an L, hence GOLFER, who drives from the tee.
[Raak] Thanks. 'run over by' as an insertion indicator is new to me, but the rest is much as I thought. Have we solved all the outstanding ones now? If so, before the serious stuff begins again, here's a little light-hearted diversion: Be alert when one's aurally deviating? (5, 2, 4, 4)