When I was a little kid, I really liked NASCAR. One thing that really caught my fancy was that they were racing Chevys and Buicks and Oldsmobiles and Pontiacs and Fords and Mercuries and Plymouth and Dodges...
Now, cars all look alike. Blech.
Yup. And there was no mechanical monster template they had to fit into. When they started complaining in numbers to NASCAR about ford has this and Chevy has that and Buick is doing this that opened the flood gates. It is now a 1 size fits all.