More than 70 years of gas vehicle production at Ford's Louisville Assembly Plant in Kentucky are giving way to a fully electric future. Ford says the site, one of its longtime manufacturing hubs, is in the middle of a $2 billion overhaul to prepare for the Fathom EV truck. Here's what to know On Aug. 13, Ford told InsideEVs that the Louisville Assembly Plant's retooling for Fathom production had been completed, though a later update from Ford co…