This one is very recent, and it is a very simple gamemode.
Meaning that the car will not be free like in round mode.
To be hired, go inside of a base and get hired by the manager. Is almost the same as round mode, but is open world as it says on the name. There will be a time limit, if it runs out the round ends, the first who reaching the last line, will win and they will earn 1.000$, the round will end.