The Atenza Sedan's first appearance was only yesterday, so expect it for another day or two after today. Sorry, re-reading your post it seems that you want a different one-make every day? I quite like having the same car for a few days, as you get the chance to get a feel for it.
Edit: and people are only moaning about the Atenza sedan because it's a piece of ****
most of the one-make cars (barring the obvious) at least have a degree of sporting pedigree. I don't even know why a normal family saloon has been included in the game.
Fair point, Interlagos does seem to be up most days at the moment.