If you don’t know Bus Bar, you fail the exam as Beijing (laowai) ren.
First it stood in front of City Hotel and the Den. Then, gone.
Reappeared a couple of hundred meters further, on the parking lot in front of Vics & The Outback, a bit hidden by a wall. Then the wall became higher and only insiders knew the location, or the regulars at “Shut Up and Just Drink”. (or something like that).

The 2008 Olympic wrecking Crew came along, closed the parking, got rid of the 5-by-side football courts.
The, a few days later, no more. I thought, this time, R.I.P.
But the owner and his regulars, majority from African countries, are tenacious.
I was just at FLO (3rd Ring Road East, but of course you knew that), and, voilà, there it is. Wrecked, but under repair. I had a chat wit the owner and it seems that is the new parking spot for the Bus.

Now you know.
BTW, seems popular Browns is history and the owner vanished in thin air with most of the goodies of the installation. Overnight. That at least is the rumor.

Nanjie (“Shut up”) has now changed its door (again, back to the old door of years ago) and is still in business, without the outdoor seating. Indestructible.