WASHINGTON, Iowa – A missing Iowa businesswoman's car has been found near St. Louis, Missouri but the 45-year-old still hasn't been located. The Washington County Sheriff's office said Sunday that Sharon Ruth Hopf's 1999 white Chevy Lumina had been found. Investigators are searching the car for clues that might lead to Hopf. The Crawfordsville woman was reported missing Thursday after she didn't show up for work at a home furnishings company she owns in Kalona. Anyone with information regarding her whereabouts is asked to contact the the Washington County Sheriff’s Department at 319-653-2107 or 1-800-TIPS-492.