Subject: Poggibonsi car rental

Hi Ziners, I have an obscure question that I hope someone can help me with. Does anyone know of a car rental outfit in Poggibonsi, Italy? Eight of us are renting a villa in the Chianti area for a week and as one of the couples will already have a car, we were hoping to rent another one locally. I know we could get one in Florence and drive out, but we'd rather do it locally, if possible. Thanks, Ann in California