So I was thinking with a few other guys, what if we had a run where the aim was the complete every race in every car in both modes. It would be the extreme marathon run of runs!

Seems like an interesting concept, will look into that

True. If I ever attempted this run, though, I would always start with Races.

Update, This is literally the most painful thing ever, start it at like midday and not 11pm.

I could see doing time trials or race with each car, but not both together lol unless it's a 100% completion speedrun