Heh.

sort-of heh. But the difference is that motorsport (unlike your other two examples) used to be more open than it now is to those without big financial backing and in particular in the early pre-meaningful sponsorship years to those without family financial backing. It's not as bleak as some make out, but it is harder than it was, which is wrong. 

Blonde and brunette hotties in the pit lane.  Sometimes a redhead too.  How is this not diverse?

Yes I remember when Jensen Button was a chimney sweep and Damon Hill famously clawed his way to the top as the son of a coal miner. 

Car driving motorsport has always been about as diverse as Slaughter & May. 

Damon’s Dad left the family destitute - his Mum went bankrupt. 
 

Mansell fought his way in without any family money too. 

Car driving motorsport has always been about as diverse as Slaughter & May. 

There was a sweet spot from the fifties to the seventies when the entry levels were within reach. F1 drivers included a Billingsgate fish merchant, a Swiss scrap metal collector, a Leicester market barker, a World Champion who got his start by trading mechanic work for occasional laps, and another who was a teenage refugee.  

A Billingsgate fish merchant could have cash that would make legal try hards weep with envy. Also back then a hefty "you might fooking die" premium now only found at the TT. 

Damon Hill prob got in on some wet blanket access programme TBF. "Ooh that mean German in the far worse car is being beastly!!!" 

Yes I remember when Jensen Button was a chimney sweep and Damon Hill famously clawed his way to the top as the son of a coal miner. 

Car driving motorsport has always been about as diverse as Slaughter & May. 

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this is cobblers. Button came from relatively humble background - the difference for him was that his dad was a pro racing driver (but a v grass roots one). Hill had no family money at all (the families of the others who died in the plane crash that claimed his dad were able to claim against the Hill estate, leaving v little). He had the most remarkable journey into F1, an unthinkable one now (which rather proves my point), of scrabbling around in motorbikes (including a stint as a motorbike despatch rider in London, living on the south circular) before clawing his way into a terrible F1 team and then getting a test gig at a great one. Hill's dad is actually another good case in point - worked his way up from mechanic - as is Jackie Stewart. There have always been those of privilege in the mix too, but the point is it was more of a mix than it is now. Genuine problem.

I have seen the following question for ‘class’ diversity from employers:

”what did the main earner in your family do when you were 14?”

sounds like it would be

”racing driver” 

”racing driver”

”racing driver”

”racing driver”