NASCAR pit crew casually change tire whilst the car is on fire

There's being professional in your work, and then there's this.

Martin Truex Jr's pit crew casually went about their business during a routine pit stop during the Ford EcoBoost 400 at Homestead-Miami Speedway on Sunday. As Truex came in for a tire change and refuel, the petrol caught fire and set the back of his car alight. But this didn't seem to faze his technicians one bit, who continued changing the back left tire of the car while the gasoline steadily burned right beside their faces.