Reward/Payment

[deadboy]

It's way too much and would make the game unbalanced and people would make too quick progress. That means everyone will get bored faster because they unlock everything withing a few days.

Also a quote out of the FAQ at F9 ingame:

Q: It takes too much time to unlock new cars/new parts for owned cars. 
A: NFS:SA is a multiplayer gamemode, where you should never unlock new things too quickly and instead your progress will increase slower than in singleplayer NFS games.

Also people would be only afk all day then. Right now there is Freerun-Money, you can collect dollar bills (starts by $100 and every next bills brings $10 more (so it goes like 100, 110, 120).