Gee! where are all the cars parked?
If you check out my video at 1:31, you will actually see a car coming out of an underground car park from the left. If you check out 1:37, you will see another car coming out an underground car park from the right.
Exquisite Bay is actually split in 4 parts. They were built in 4 phases, so each neighbourhood's full name is actually something like "Exquisite Bay Phase One", "Exquisite Bay Phase Two"... etc This is a typical naming convention in China because big developers tend to build multiple neighbourhoods of similar style in the same area.
The roundabout that I fly over at 1:24 is in the middle. From the roundabout, the bottom left and bottom right are Phase One and Phase Two. They are the apartments with the paler exterior. The top left is Phase Three, the top right is Phase Four. Each "Phase" is more or less a separate "gated community", in the sense that it has security guards at the entrances. But not in the sense of an exclusive community surrounded by slums, as in other developing countries.
Anyway, finally getting to your answer... each "Phase" has its own underground car park shared by all the apartments in the Phase. For example, I live in Phase Three, from my apartment, I can take a lift to the underground car park and then directly access any other apartment in my Phase via the car park.
Fun(?) fact... (I hesitate to mention this cos I don't wanna alarm people lol) it seems the newer neighbourhoods built in the last 5-10 years or so also use their underground car parks as air raid shelters. They aren't proper bomb shelters, because I don't think there's a store of food and essential supplies for long term habitation. But they do have heavy duty blast doors, presumably designed to stop shrapnel and contain fires.
