You have not identified the car model. So my answer is incomplete.

It sounds to me like there is a good possibility you just burnt water condensate off in the oil. If the return trip does not exhibit the same consumption you have your answer.

Condensate builds up in engines on short in town trips that does not get burnt off. The base oil does not get hot enough to turn it to steam and leave the engine.

Out on the highway running at speed burns it off. It is not healthy for an engine too have too much condensate present. A periodic run to burn it off if it turns out to be the reason and that will be proven on your way back. One way or another.

If so one has to do the occasional run or change oil more often. Cold weather increases the condensate growth faster. .