A man died after his car was rear-ended by a pickup truck on I-90, two miles east of Spearfish, on Thursday evening. The Department of Public Safety identified the victim as Marshall Osloond, 39, who was driving a Nissan Altima. He was pronounced dead at the scene. The Nissan was stopped in the westbound driving lane when it was hit by a Dodge Ram. The Highway Patrol is investigating the cause of the crash.