So I remember playing Daytona 2 multiplayer setups at the arcade with cars that were numbered from 1 to 8, not the traditional 41 which was for single-player only. Each player was designated a specific color car. In Daytona 1, I'm fairly certain everyone remembers the sequence:
P1 - Red
P2 - Blue
P3 - Yellow
P4 - Green
P5 - Black
P6 - Pink
P7 - Light Blue
P8 - Orange
See here: http://forzamotorsports.dyndns.org/media/bbs/image/133171.jpg
In Daytona 2, it goes something like this:
P1 - White
P2 - Blue
P3 - Black
P4 - Yellow
P5 - Red??? (I only saw a 6-player Daytona 2 setup ONCE so this is based on faint memores)
P6 - Light Blue???
P7 - ???
P8 - ???
P9, P10, P11, P12...???
You check out the Game Assignments and look at Car Number and there's which number car you are...but since it's not possible to link systems together, I don't know which car you'll get when you switch to that player. This has always been a mystery to me. Maybe with the Supermodel emulator, we can find out some day!