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)

[Chalky] Well I reckon that must be Prick up ones ears (or "your" for "ones" - but "ones" is commoner in Xwd answers).
Still my Presume the leader is back in place (8) to do. rab may well complain that the penultimate word is unnecessary and confusing, so you can ignore it if you like.