I started a play through on another account a while back, because I needed more decal space, but set out to not buy any cars, and rely on the roulette.
I've done pretty good so far, but did have to take a break, as I ran out races in GT League I could run, as I didn't have the cars needed. Fast forward to having some updates add races, and I've been pecking away at it again, but still missing some key cars.
Knowing how the roulette likes to give crap cars, I'm amazed at the ones I'm missing. Still need a Miata, Clio, and a Bug or Samba Bus. Can't believe those haven't been handed out yet. I have a ton of Gr1, 3, and 4 cars, and even some high dollar VGTs, but can't get some of the cheapest cars in the game.
Another I was missing was a K car, and finally got the Copen a couple days. I don't think anybody has ever been as happy as I was to get that car.
Seen the 20 mill Ford yesterday, but of course it gave me the car next to it, the Hyundai VGT.
I know I'll have to buy one of those, but going to save those races til last, or when I hit 20 million, whichever comes first. I'm at 16.5 million now, and haven't repeated any races, and only do enough to get the daily workout, each time. It's probably the slowest play through in history.