Most delivery trucks (like a box truck) have capacities more like 10 or 20 tons. A heavy freight truck, like used to load ships? Even more.

You don’t generally just throw gold in a box truck… it typically moves by armored freight.

Maybe in some volumes, but I think most people would be shocked by the overall volume of gold that moves by UPS in small brown boxes.

The gold would be moved by cash-in-transit trucks which have relatively modest payload capacities of 5000-9000lbs today, a bit less in the 60s. 3 tons per truck is probably on the high end.

Was that the case in the 60s as well? I know trucks of that era had much lower capacity than today, even when comparing across class like "half-ton" trucks.

A half-ton truck is a consumer pick-up truck, not a commercial shipping vehicle. Much much smaller.

Yup that's what I had in mind, a 60s city delivery truck, not a semi, so googled that and came up to about 10t.

The Federal-Aid Highway Act of 1956 set the gross vehicle weight limit for trucks at 73,280lbs. I imagine trucks of the day probably at least came close to that limit?

https://en.wikipedia.org/wiki/History_of_the_trucking_indust...