Driver Duplication Wont result in any more money.
The seventh driver sits in limbo as the Driver has No Physical data in the save game to update.
So the server has no Data space to store it when you try to retreve the data from GT server.
Driver duplication allows you to fill a grid with only 3 accounts no longer need 4 friends.
Main account
Driver 1-6
Secondary account
Driver duplication 6-15
Third account
Driver 16 Host remote races on this account and select all the others.
When I Was working out the Prize grid totals for this.....
........ I duplicated 15 level 0 Drivers. So I would not have to calculate the sums just copy each drivers prize totals.
What it does show Is that both GT5 Driver status page in game and on the Web site can adapt to you having more drivers and PD may have been considering a different number than SIX to start with.
Driver duplication taken to the max..