CREATE TABLE table_24465 ("Category" TEXT, "Sub-category" TEXT, "Cab size" TEXT, "Drive wheels" TEXT, "Capacity  ( litres ) " TEXT)

Name the capacity for single cab size 2 medium tanker
SELECT "Capacity (litres)" FROM table_24465 WHERE "Cab size" = 'Single' AND "Category" = '2 Medium tanker'
SELECT "Capacity (litres)" FROM "table_24465" WHERE "Cab size" = 'Single' AND "Category" = '2 Medium tanker'