Originally posted by BadBatsuMaru 
Only 24 hours?  I don't think so...
You need to make 950,000,000cr, and you're getting 350,000cr per 12-lap series.  That means you have to do the series 2715 times.
You have to do 3 laps at Rome, 3 at SS5, 3 at Grand Valley and 3 at Rome II.  The F094/S records for these are:
56.733
55.919
116.135
56.320
That's 14 min 15 sec right there, but those records were with a rolling start.  The first lap is slower, there's load time, you have to wait for the race to start, skip the last race, etc.  I'll just add 10 sec to the first lap of each race and 1 min for all the load times and navigation.  So let's say it takes 15 min 55 sec each time, which might be realistic if we assume you can match the world record every lap and you get the Vertigo on the first try every time.
So, you have to do 2715 events that each take at least 15:55, which comes out to 720 hours, or 8 hours a day for 3 months.  Even if you could do that for 8 hours a day without having a seizure, you'd probably go insane in about a month.