Tankers with specialist equipment (rescue, hazmat, CAFS)

Tankers with rescue, hazmat, and CAFS capabilities (like the game's rescue and hazmat pumper options) would be a very useful addition, also serving as bushfire vehicles—especially in rural areas of Australia where those pumpers typically aren't found. This would take away the need for those pumpers everywhere in the game. Many Australian firefighting agencies utilise tankers with specialist equipment.