Are pre-40s street rods and stockers unsafe for today's roads?

[Stoga]

I never thought I'd ask this question, but some pics I've seen on the net from time to time make me realize most of the older vintage vehicles just can't hold up in a collision with something modern. It's easy to assume the older thicker steel would make them tougher, but the design basically amounts to a metal shed bolted on to the side of a ladder on 2 axles.
Most of the accidents I've seen with 30s or older vintage vehicles amount to the same as if you drove your car through a tool shed. Basically what happens is the newer car jumps the engine and front tires, then slams into the main body at the firewall, not pretty.
Maybe it's time we just towed these to the show, or only drive them in monitored cruises, which isn't all that safe either, but better than nothing.