Such event-specific classifications may have an associated ruleset for how the vehicle is allowed to navigate the play area, and what effort must be undertaken by the opposing team in order to defeat it.
The level of involvement varies here as well; some are simply quads or similar fitted with a removable netting cage, others feature scratch-built bodies and turrets and are capable of housing several players and their equipment.
Automobile-based tanks are modifications to existing automobiles; ranging from minivans with firing ports and windows replaced by netting to near-replica vehicles featuring completely new bodies.
The most common base vehicles are SUVs, Jeeps and trucks due to low cost and availability, although their high ground clearance and four-wheel drive is also helpful given poor conditions of many trails and roads in paintball fields.
The absence of infantry on the field, and the high-density, high-velocity projectiles, allow for faster vehicle movement and more realistic engagement ranges.
A small fleet of tanks (actually FV432 Armoured Personnel Carriers) are available for rental, fitted with cannons of the high-powered variety (firing 40mm diameter paint-filled pingpong balls).
As previously mentioned, closed-hatch operation is mandatory as these super-sized paintballs have too much kinetic energy to safely impact unprotected persons.