A truck driver passed out behind the wheel and crashed into another tractor trailer, causing his cab to catch fire on Interstate 35. Amazingly, both drivers were able to walk away from the incident.

It happened on I-35 in Guthrie, Oklahoma, on Sunday evening. According to witnesses, a truck that was traveling south veered into the northbound lanes, through the highway median fence, and into another tractor trailer that was headed north.

The driver told responders that he had a medical emergency behind the wheel, causing him to pass out. After striking the southbound truck, his rig caught fire, eventually burning to the ground.

A motorist captured this video of the truck burning on Interstate 35.

Both drivers were able to walk away from the scene. The driver who passed out suffered minor injuries, the other driver was not injured. Their names have not been released.

Interstate 35 in Guthrie was closed for several hours after the incident, but has since reopened.

Local news station KFOR spoke to several witness in the footage below.