Prosecutor: After killing 8 on bike path, motorist was happy

FILE - This undated file photo provided by the St. Charles County Department of Corrections in St. Charles, Mo., shows Sayfullo Saipov. Saipov, 34, is charged with killing eight people on a New York City bike path in a terror attack five years ago. A jury is expected to begin hearing closing arguments Tuesday in the trial of the Islamic radical who killed eight people in a vehicle attack on a waterfront bicycle path in New York City in 2017. Saipov could get the death penalty if convicted. (St. Charles County, Mo., Department of Corrections/KMOV via AP, File)

Prosecutor: After killing 8 on bike path, motorist was happy