1.Where are the offices of car rental companies eg. Eurocar, Avis etc.in Siena for me to pick up my car? Are they near the main train station?
2.After getting my car at the pick up point, is it easy for me to navigate away from the city and go straight to the motorway.(ZTL is a threat)
3.I will drop off my car at Siena on 2/July which will be the day of Palio di Siena. I just want to return the car to the office and take the train to Milan without going into the city. Will the traffic be very heavy on that day even not going into the the city. In that case, is it advisable to return the car at Florence instead.