Oh HN.
Medical schools aren't just some kind of cadaver multiplexer, farming them out to other industries that want one for "crash tests". If you want your body to be used for "crash tests", say so, and then hope your body meets the requirements of that industry.
“Arizona man finds out mother’s body donated to science was sold to be used in IED blast test”
https://www.newsweek.com/donated-body-sold-army-brc-arizona-...
"Dismembered limbs sewn together like 'Frankenstein' at body-parts donation center, FBI found"
https://www.nbcnews.com/news/us-news/dismembered-body-parts-...
Here's a comprehensive overview of the problem from Reuters:
https://www.reuters.com/investigates/special-report/usa-body...
That's where it crosses the line between unfortunate and immoral.
Donation for science is a broad category which includes everything from crash tests to bombs.
Source: I have a friend who runs crash tests,*, but I'll give you a link I Googled anyway.
https://www.bodyshopbusiness.com/strange-but-true-donated-bo...
*Fun but morbid fact: they have a lot of trouble procuring dead babies.
Oh well.. that's good... kinda.