The St. Louis County man accused of brutally beating another motorist in a road rage incident near Ballpark Village in October now faces charges in an unrelated assault — one that took place before his alleged rampage downtown. John Jacob Ehlinger, 35, was arrested last month on a charge of third-degree assault, a felony, court records show. The charges stemmed from an August 2023 incident in which Ehlinger was caught on surveillance video kicking and punching a casino security guard.