And to think that 1996 produced almost 3 times as much. I remember everyone had chains and snow tires (of course that was before the "all season" type tires too). Always had that twice-yearly ritual of putting on and then taking off the snow tires.
The irony of 1966 was that summer, the east coast experienced a heatwave where many all-time high records were shattered and here in Philly, the temps tied the all-time high for the date (at the time) of 104 when that happened July 3 - https://www.weather.gov/phi/hist_phi
I remember that some friends of my parents had a cottage in N. Cape May and we spent a couple weeks there for vacation during that hot summer (I think in August).