WIFI car sharing

Today , i checked in the Martin’s blog a video in which there are 3 peoples sharing wifi through la fonera while traveling in the car.
It’s basicaly a fonera connected to a laptop with a HSDPA card providing broadband access.The video can be seen here.
It’s a brilliant idea , and the most interesting appliance could be public transportation , such as bus , metro and train.
I though immediately to Venice as the time spent in the public boats is so long , 45 minutes to reach Piazzale Roma (bus and train terminal ) from Lido ( the place where I was born ). Providing wifi could be easy and generate additional revenue to the transport company.