Sicily is the largest island in the Mediterranean Sea and an autonomous region of Italy.
People in Sicily are passionate and friendly. Really friendly! They can invite you on a café or they may want to touch your private body parts. There are not many highways in Sicily and waiting time on the road is between 10 minutes and 2 hours. Sicily is small and there aren't many highways, so it is easy to find a spot for hitchhiking. Hitch-hiking in Sicily is hard, but possible. It usually works well on small national roads, but it is not easy to hitch out from a bigger city.
It is possible to hitchhike onto the island (it means you don't need to buy a ferry ticket), if you hitchhike somewhere before Villa San Giovanni (Artti was 200km away) with a sign Sicily. But don't worry if you have to buy a ferry ticket, for one footpassenger it's 2.40 euro.
It is possible to take buses without a ticket and have long rides out of the city.
Other Useful Info
Traffic in Sicily is crazy.
Hitching in Sicily can be pretty slow. It took Ecasalicchio 24 hours to do about 150km one time. There aren't many service stations on the central autostrada. It's easy to find yourself having to hitch illegally on the autostrada.