Welcome to New Jersey, the garden state.
After leaving SWORD HQ, Monica drives into New Jersey on her way to Westfield.
With the production taking place in the Atlanta area, the crew used stock footage of a highway and roadsign. But not one welcoming people to New Jersey. This is a shot of the Mason Dixon line (the border between Pennsylvania and Maryland, separating northern states from southern) on I-83 looking North at the Pennsylvania border.
(WandaVision S01E04, 2021)