He shot himself in the head as the vehicle spun out of control.
The worker, who recognized Stephens as the wanted Cleveland Facebook killer, is credited with stalling him at the drive-thru window Tuesday so authorities could have extra response time.
The man who posted a video of himself on Facebook killing an elderly man shot and killed himself after a "brief pursuit" by Pennsylvania State Police officers.
Police got the decisive tip-off after Stephens had been on the run for almost 48 hours, when a McDonald's employee recognized him at a drive-thru in Pennsylvania shortly after 11:00 am (1500 GMT) and called authorities. Williams added that police "wanted to bring him in safely" so they could talk to him to try to understand his motives. The video was later uploaded to Stephens' Facebook page, which has since been deactivated. But Stephens did not wait, he said.
Before the start of Facebook's annual F8 developers conference, CEO Zuckerberg said: "We have a lot more to do here". Although Stephens is dead, Jones said he has not found peace.
Although Facebook pulled the videos and suspended Stephens' account 23 minutes after they were first reported, Zuckerberg said Facebook could do better in quickly flagging and removing violent videos. It was just the latest instance of crime footage being shared on social media.
Police believe Stephens might have left the state of Ohio.
According to employees at the restaurant, Stephens ordered a 20-piece McNuggets and a large order of fries in the drive-thru.
Stephens's mother told local news channel that she called him on Sunday after learning about the video, and he had told her he was shooting people because he was "mad with his girlfriend". Godwin did not seem to recognize the name.
Detectives spoke with the suspect on Sunday by mobile phone and tried to persuade him to surrender, police said.
Authorities on Monday offered a reward of $50,000 for his capture.