Seems interesting, I'm in if this doesn't clash with my sleep. Jamie, you dont have to shut down the pc, using macro and taskkill gta 5 would do the job.
Link source: Works on PC by using a batch file with the following 2 lines to close the game instantly:
taskkill /F /IM GTAVLauncher.exe
taskkill /F /IM GTA5.exe
You can bind it to a key if your keyboard supports that or use a keyboard macro program like AutoHotKey to execute the .bat. Btw ED, the trick to let everyone into the kuruma is by inviting/buzzing them into the safehouse first, send everyone to garage then ride together. The game only allow 1 passenger once you are outside the safehouse.
Team is not decided yet.. almost.. and the time will be discussed with the team. Please don't feel bad if I don't select you in the team.. there has been a lot of interest in this challenge so you won't have a problem finding members