plenty of small fridges are run in the back of trucks
there are chest fridge or freezers (mainly 12v) they can be used in the truck to supplement trailer fridges for long trips
A little 110v bar type fridge may work but test out how easy you can locate it so you can get stuff in/out of it
If you are the only one with long arms ....
Daddddd can you get me the milk!
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For the NO kids people ... extra fridge space means you can mount the small Kegs