CREATE TABLE table_20866024_2 (engine VARCHAR(255), gvw__kg_ton_ VARCHAR(255), model_designation VARCHAR(255))
What's the engine for the model model designation 97G00 and GVW of 2500/2.46 kg/ton?
    
SQL: SELECT engine FROM table_20866024_2 WHERE gvw__kg_ton_ = "2500/2.46" AND model_designation = "97G00"