Are Utah’s vintage plates a sign of a classic car or a license to dodge emissions testing? Makenzie Sisson © Jeffrey D. Allred, Deseret News Regan Swain stands near his 1938 Chevy Coupe during the “Rumble in the Park” car show at Pioneer Park in Salt Lake City on June 13. Regen Swain shares a drink with a few friends, milling about between classic cars and jetted-out Ferraris meticulously restored and on display for a “Rumble in the Park” in downtown Salt Lake City on a recent Sunday. Research Volvo Swain is new to the vintage car scene, having bought his 1938 Ch...