The alternative to driving is to hire a bicycle or motor scooter, these modes of transport make it easier to avoid the traffic jams and are a popular way to see the sights of Florence.
Bicycle and Scooter Hire
Alinari, Via Guelfa 85R, near the train station(055 280 500).Geordie Chopin (055 245 013), Florence by Bike (055 488 992).