CEDAR RAPIDS — Police have identified two people who were killed early Saturday when their car slid across a freeway in Cedar Rapids and slammed into a patrol car. Cedar Rapids police on Monday identified those killed as 21-year-old Martrell Demetrius Watson and 22-year-old Kaitlyn Marie Hall-Stougard. Both lived in Cedar Rapids. Police say the crash happened at 2:48 a.m. Saturday when Watson lost control of a car he was driving on Interstate 380.