The original idea was to create a 1950s style vintage Ice Cream Truck. After creating the Ice Cream Truck, I thought it would be interesting to envision it as other trucks by making slight modifications. This lead to the creation of the Ready Rockets and Zombie's 'R' Us trucks.
These could easily be used in an animation or even in a game. In fact, they match two of my other projects: Cityscape V1.1 and Adventure Planes. Thus, these assets could be combined along with some new assets to create something new.