In any case the trick is to ensure that, even if statistically there is a huge difference in interest, the girls who would want to be a racing driver are not disadvantaged at any stage in their quest because they are girls. And I would ague that that includes the stage of thinking 'is this something other people who are like me do?' which does kind of, on some level, govern our decision making whether we like it or not.
I can't say if W-series is the right fit for that - it's not the route I would have gone with - but hey ho.
On the face of it, that sounds true.
But let me point to the example of rallying. Now, this is a sport where WAGS get dragged along in droves to support their father/brother/boyfriend/husband/son and get close to the action either as part of a rally team or as spectators.
And interestingly, possible 30-40% of rally co-drivers are female. Many, being smaller and lighter than us paunchy blokes, of the aforementioned WAGS are dragooned into the co-driver's seat, although then very many of them prove to be extremely competent at the more important part of the rally team's work. You might think then that more of them would fancy a bash with the steering wheel. But no, numbers of female rally drivers remain very low - probably a lot more than in car racing as a whole, but still penny numbers. And this despite the examples of Michel Mouton, Louise Aitken-Walker and several other high profile female rally stars.
Perhaps working with maps, watches and pace-notes is more to the female taste than wrestling with steering wheels and gear-changes? It is not a lack of opportunity although perhaps not being interested or willing to do your own car preparation is a barrier, which might also apply to racing.