This was recorded a few months ago in Miass.
Once the firefighters arrived, the truck, for some reason (most likely mechanical meltdown due to the fire...), rolled downhill and smashed into some other vehicles and a building.
Luckily, nobody sustained any injuries.
However, lots of damage to various vehicles and the building.
Now, apparently, people are seeking financial redress via civil proceedings due to the damages they incurred to their vehicles and real estate.
The driver alleges that he set the truck on the hand brake before he exited the flaming truck. However, this statement is yet to be verified by whatever 'professionals' in court.