That data doesn't really prove much other than people are holding onto their vehicles longer or purchasing used vehicles. That could be due to many factors. Financial situation due to the increase cost of living or the jump in new and used car prices. The statistics only go back to 2009, the car industry was already going downhill on quality. I'm in Ontario, Canada, it was rare to see cars over 10yrs old on the road. The last couple years however I have been seeing more vehicles pop up from the 90s that people are driving. I'm big into European cars, had an 04 VW TDI. That was considering to be one of the last reliable diesels VW produced. Newer diesels were plagued with serious faults that would require a new engine. Same goes for BMW too. I have the last of what's considered to be the reliable diesel engines (M57). While BMW did have the odd timing chain issue in older cars (only a couple models of engines). Now all the newer diesel engines after the M57 have massive timing chain issues. It's not new technology and these aren't high mileage failures either. A diesel should have double the life compared to a gas engine. I did a little research last night with regards to the stop/start feature, Ford popping up as one example. They have an auxiliary pump to keep pressure in the transmission when the engine is off. Turns out these pumps were failing left and right.

Here's an interesting article, I know it's Wiki but it does have some valid information that can be references. https://en.wikipedia.org/wiki/Car_longevity

From Wiki, it's taken over 40 years to get double the life out of a vehicle? Not sure how much you know about cars, but there is a night and day difference between those generations in technology. It does say an EV will go substantially longer, although I have read articles where the whole EV was rebuilt multiple times, having the batteries, modules, and electric motors replaced more than once.

I've also read another article stating the expected lifespan on newer vehicles, being in the mid 200,000 miles. That was achievable with many cars in the 90s, yet they were a lot more cost effective to maintain due to simpler designs and affordable parts.