By HOPE YEN
WASHINGTON (AP) — All 50 states have received final approval to begin construction on a first nationwide network of electric vehicle charging stations that places one roughly every 50 miles along interstate highways. It’s part of the Biden administration’s plan to spur widespread adoption of zero-emission cars. The Transportation Department approved plans Tuesday for the last set of 17 states that will install or upgrade fast chargers along 75,000 miles of highway, coast to coast. By year’s end, drivers could start seeing shiny upgrades to existing highway EV stations in states including California, Colorado, Florida and Pennsylvania.