Police are now trying to figure out what led to the dramatic incident that happened Sunday.
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Investigators say it appears to be a case of road rage that unfolded after a driver cut off another driver.
Both of the motorists pulled over along southbound I-95 to apparently settle things right then and there.
In the video, the man driving a sports car appeared to continuously hit an older looking truck driver.
A car of motorists was driving by when they caught the shocking fight on video. They tried to break it up but found themselves at the center of it all.
"He punched him through the window, and he proceeds to open up the door and pulls him out, and he hits him again and he falls," said Tommy Solis, who filmed the incident.
"He was just a poor old man, he was just defenseless, you could see it in his face," Solis continued.
Although police were never called to the scene, they are still conducting an investigation.