“cast bodies might be more difficult to fix in the event of major damage, such as a crash.” Raise your hand if you’ve ever had a car NOT be written off after “major damage”. The industry already doesn’t bother to fix cars, they just get scrapped, so I don’t see what the actual difference is.
I was rear-ended in a new Jeep Wrangler. Damage included a bent frame, crushed rear bumper, bent rear hatch, bent roll cage, bent rear fender, shattered tail light, and a bent floor.
It was nearly $20k in damage. It was repaired. [and I very quickly sold it because I had zero faith in the longevity of the repairs]