Whilst just perusing the official Cars 2 website, I found 2 new (1 previously unheard of) Cars 2 Characters: Francesco Bernoulli and Uncle Topolino. Both look really good and if you click on the bios you find the turntable of Francesco. Uncle Topolino is presumably (from the look of him) affiliated (maybe even the uncle of) Luigi!
I'm really pleased about finding my first exclusive!
Update
Make that 3, found Mama Toplino (below)
Francesco Bernoulli turntable (below) in HD.