In those days the tanks were much lighter - M1A3’s are approaching 70 tons - saw a demo of some tank contest where they crushed far bigger civilian cars as part of the contest.
Twin 40mm Duster were not heavy enough or have enough power to run over anything substantial like a 300 Chrysler LeBaron.
M1A3’s are approaching 70 tons
When that sucker gets stuck, they might need two M88s to get it out!!
Handy if you have roads, bridges, frozen steppes...
Does an AVLB work with that weight?
You go first, think I’ll walk...