I remembered when my parents were having many rough times, trying to figure out if this S500 modeled M-Bez is the right choice for them. Then came a dealer. He was very cooperative to give them a detour behind the construction building, and showed some neat features such as technical specification that my parents had never seen. Anyways, it took them to cooperate about 2-3 hours, however, they didn't get the car. But it was nice to have a dealer to be able to help as much as he can.