Thanks for the memories, Dan!
Just got back from Chianti... we stayed in Chiocchio just north of Greve.
Enjoyed driving SR222 but I kept checking the rear-view mirror of my rented Fiesta to let convoys of Ferraris and Audi R8s pass when the road straightened for a couple hundred yards.
I'll attach a photo from a pull-off in Castellina in Chianti.
-Dan in N.H.