Happy leap day — The adapter is free if you order it before June 30 or $230 if you wait. Enlarge / Ford was the first OEM to announce it was switching to J3400, and it's the first automaker to gain access to the Tesla Supercharger network.Ford Today, Ford electric vehicles gained access to the Tesla Supercharger network. Last May, the Blue Oval was the first automaker to throw its lot in with what was then called the North American Charging Standard and is now known as J3400. Ford proved to b...