So when "na" is used to answer questions of "gde" the Prepositional is used.
But when "na" is used to answer question of movement the Accusative is used.
I like the explanation "Наши машины одинаковые" but I didn't undersrtand the explanation of "Твоя машина - такая же, как (и) моя" what part of speech is "такая же"?