Is there a modern equiuvalent?

[maynard]

Is

 

[NutmegCT]

1959? Looks modern to me ...

How 'bout this 1956 Chrysler record player 0

 

[JPSmit]

My parents had a small immersion 12V heater for years to make coffee on the road.

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But I suspect the true equivalent would be the cooler built into many cars now.

 

[Bayless]

There is a little vent in the glove box (cubby) on SWMBO's Saab that can be opened so the A/C can keep your CAB cold and it has room for a 6 pack.