Tesla now allows non-Tesla EVs to use its Supercharger network in a handful of locations in New York and California using its new Magic Dock CCS adapter. We visit one of these locations with CR's Kia EV6 and Mercedes EQE test vehicles to evaluate the charging process. We also talk with Tesla owners who give their thoughts about sharing space with non-Tesla electric vehicles, what it's like to see cars like the Rivian R1T and BMW iX in charging stalls, and follow one Volkswagen ID.4 owner as he experiences some hiccups using the new system.