Slightly off topic; but I’ve never understood this grinding mentality since I’ve been browsing this forum. It sounds so… not fun! I’m just playing the game normally - i get a car, browse around to see what events it can be used in, try it out and repeat in the next car. I’m making plenty of credits this way. Sure there could always be a wider variety of different events for all the different cars, but that’s another discussion.
Maybe it’s not as ‘efficient’ as grinding, but really - what’s the rush? Why is it important to make as many credits as possible in the least amount of time by doing the same race over and over and over again? It sounds like such a dull and depressing way to play a videogame!