This is my proposal, the same as the one I posted last night:
It’s very difficult to make a good circuit, because everything is so cramped. What’s more, this is in a residential area, so it’s going to cut hundreds of people of from the outside world. But Sanamluang Park is one of the few places I can find in the city that could actually support the pit lane.
The only other alternative I have is this, again with the pits in Sanamluang Park:
It should cut off less people – in fact, it might cut off no people – but it’s probably in violation of FIA regulations that actively discourage (if not outright forbid) circuits from using two sides of a dual carriageway as a circuit.