Well, GT5 just gave us a nice gift: 1 million in 3 minutes.

[LeDechaine 51]

There's a new special event, the "real circuits tour", and it includes the indianapolis oval. So, get in the Mazda 787B, keep your foot to the floor for more or less 3:20, and you get 928 000$.
 

 

Fun fact: The stock 787B locks at 399kmh.

 

A nice little way to get cash before the "special events" disappear... I think they'll disappear at the end of may or something, with multiplayer, etc.
Makes me wonder what I will do with my Ferrari F10 without special events, heh.