taylor. >> kind of do a little bit of everything. cook, cleaning, and taking care of the customers and making sure they're happy. >> outside, a security camera captures a man in a graying his tank. he grabs his cell phone from the front seat to answer a call. eventually, retreats from the chilly night back inside his car to talk on his phone. as two more customers pull in, the man on the cell gets out to remove the nozzle. that's when, without warning this fill-up goes up in flames. >> right at that moment, i turn to my right, and there was like an eight-foot flame shooting out of the vehicle, like you would see a firework on the fourth of july. >> from a truck parked close by off-camera, customer mark called 911 in disbelief. >> i watched this car go up in flames so fast. you start to ask yourself, what's inside the car? >> as the fire accelerates, another danger grows. buried just a few feet below the car, gas reservoirs hold hundreds of gallons of fuel. if fire travels down the pump to those reservoirs, it could blow the gas station and everyone around it sky high. >> my heart was beating a thousand miles per hour. i turn around and push the emergency shutoff but