In a parking lot in Dearborn, Michigan, next to the Henry Ford Museum, three streetlights now double as EV chargers.

The site is one of the first installations of the Voltpost Air, a device that taps into existing infrastructure to quickly add charging capability at the side of the road or in parking lots.

The approach is simpler than adding stand-alone EV chargers: Installation takes just a few hours. “We don’t have to do........

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