Eco Move Rent
EMR hires out bikes, scooters, boats, even helicopters and airplanes!
http://www.ecomoverent.com/

Port of Rome
Find out more about the port of Civitavecchia near Rome.
http://www.port-of-rome.com/

Tirrenia
Hop on to one of Tirreni's ferries, if you want to get from Rome to Sardinia.
http://www.gruppotirrenia.it/default.asp