Here you can see Porsche who had this exhibition area for 3 days between Shinkong Place and Huamao building.

 

Below you can see BMW who booked the whole parking lot of 3.3 building in Sanlitun to showcase 8 or 9 car models with onsite sales assistant in case you are interested to purchase one.

This kind of new street marketing is getting very popular; on my side, i am wondering if it is actually legal to pitch costumers to sell cars outside of the official Point of Sales (POS). But well, with all the money involved, i guess they are covered... in one way or another...