>I'm not sure I'm convinced that consumers came out of the pandemic with a large change in car types.
Well, first of all it doesn't need to be what any person is convinced is "large", it just needs to be nonzero. Second of all, it's not about customers, it's about manufacturers. As your own data indicates[0], a nonzero number of people replaced their car during that time period, just like in every other time period. If more people choose electric than did decades ago, there will be more electric cars than decades ago. And there are[1]! Electrification is increasing, therefore weight is increasing, therefore crash severity is increasing.
So the timeline is, each year, more and more people are buying electric cars, and it looks like severity increased, too. Do we have data on people's ability to drive over time? Maybe, but I haven't seen it, so that's what seems unconvincing so far. We definitely have data on vehicle weight over time, though.
[0]: "Sales data doesn't suggest that consumers went out and changed their fleet" – by my viewing of the data, it shows that a lot of consumers, in fact, went out and bought a car during that period. Millions did, tens of millions even, and it only takes a single car difference to affect the population average.
Well, first of all it doesn't need to be what any person is convinced is "large", it just needs to be nonzero. Second of all, it's not about customers, it's about manufacturers. As your own data indicates[0], a nonzero number of people replaced their car during that time period, just like in every other time period. If more people choose electric than did decades ago, there will be more electric cars than decades ago. And there are[1]! Electrification is increasing, therefore weight is increasing, therefore crash severity is increasing.
So the timeline is, each year, more and more people are buying electric cars, and it looks like severity increased, too. Do we have data on people's ability to drive over time? Maybe, but I haven't seen it, so that's what seems unconvincing so far. We definitely have data on vehicle weight over time, though.
[0]: "Sales data doesn't suggest that consumers went out and changed their fleet" – by my viewing of the data, it shows that a lot of consumers, in fact, went out and bought a car during that period. Millions did, tens of millions even, and it only takes a single car difference to affect the population average.
[1]: https://www.bls.gov/opub/btn/volume-12/charging-into-the-fut...