i had that happen to me one time with my accord i ran over a big ass tire on the road in the middle of the nite . I think it was one of those big 18 wheeler trucks and it messed up my whole front bumper and it tore my radiator apart . How long did u drive it with out the antifreeze ? and did u notice that the temp of the engine sky rocketed to HOT ? Ur definitly gonna have to take it in to the shop and did u tell ur insurance ? B/c its gonna be over a thousand dollars worth of damage