CREATE TABLE table_23972 ("Model Type" TEXT, "Model Designation" TEXT, "Engine" TEXT, "Wheelbase  ( mm/inch ) " TEXT, "GVW  ( kg/ton ) " TEXT, "Axle Ratio" TEXT)

What model type has model designation 97500?
SELECT "Model Type" FROM table_23972 WHERE "Model Designation" = '97500'
SELECT "Model Type" FROM "table_23972" WHERE "Model Designation" = '97500'