Yup, I liked it too. Although - on a second reading, isn't this analogy also making the case that if you wanted to watch cars race round a track all the F1 cars should race against each other? That would be like having an Open Category, which is what was proposed in the article by Jon Pike cited earlier. The one in which he states, in his conclusion, that "It is possible to argue, coherently, for the abolition of female sport."
Then, if you wanted to compare the performance of flying cars you should do so based on their flight characteristics, rather than their ability to race round a track. I mean, who wants to watch car/planes taxying around the airport, right? Or alternatively you could just look at and admire flying cars whilst parked up somewhere on the ground and that's cool too? I'm not altogether sure this analogy works for all waves of feminists. It's still good, though.
Regarding your earlier post about wheelchair rugby - if you want fairness, you do need dozens of categories. Actually, more like hundreds and thousands. It soon gets impractical. But by not doing this, you must accept that fairness isn't what it's all about. And if you go back to what it was originally about, back in the days of first and second wave feminism, it was about men having leisure, while woman kept the hearth and home, and women not taking part in any sport in any significant numbers, and being excluded and segregated. In the olden days, the fight was against men keeping women out. Seems that the tables have turned.