As somebody did say here, it is probably not the best time to invest!
But if he likes cars I would persuade him with WPL - the company with a future, with a lot of promising projects, stable and powerful, interesting, motivating and man's like :-)).
I am sorry but WOW is a dead share IMO as all dividends will be eaten by inflation.It is not an advice, its my opinion only.
I know nothing about the children’s tax, but if somebody suggested it is probably worth considering!