Where does “inter-car” come from?

inter-car (English) comes from English car, from Middle English carre, from Anglo-Norman carre, from Latin carra, from Latin carrus, from Gaulish karros, from Proto-Celtic karros, from Proto-Indo-European ḱr̥sós — to run.

Ancestry of “inter-car”, step by step

StepLanguageWordMeaning
1EnglishcarA wheeled vehicle that moves independently, with...
2Middle Englishcarrecart, wagon
3Anglo-Normancarrecart
4Latincarra
5Latincarrusa wagon, a four-wheeled baggage cart; a cartload,...
6Gaulishkarroswagon
7Proto-Celtickarroswagon
8Proto-Indo-Europeanḱr̥sósvehicle
9Proto-Indo-Europeanḱers-to run
Every word from Proto-Indo-European ḱers-Every word from Proto-Indo-European ḱr̥sósEvery word from Proto-Celtic karros