College student still missing after 1 week; disappeared after Lyft ride from airport

Family and friends of a missing University of Utah student are pleading for information about her mysterious disappearance, shortly after taking a Lyft ride. MacKenzie Lueck was last seen one week ago.Last Monday, Lueck's family says she landed at Salt Lake City International Airport after attending her grandmother's funeral in California. She took a Lyft from the airport to an address in north Salt Lake. Her family and friends say the 23-year-old hasn't been seen or heard from since.Lueck was l