Nuka-Cola Truck
In this Special Encounter, you find a truck flipped over at a bus stop. In it's prime, it was used to transport Nuka-Cola bottles. Hence the large "Nuka-Cola" logo.
There are two Crates found beside the truck. Maybe the truck was driven by Lumpy, a ghoul who appears in Fallout.
The two crates are protected by a Centaur.
Loot
The crates can be searched for a number of Nuka-Cola bottles ~24. One of the crates will be locked.