[estebank]

It would be interesting to see if that calculation was with average ferry load, and if there's is any tip over with some reasonable increase in ridership. During rush hour the ferries are packed already, but I find that people in the US leave the car at home only as a last resort.

I'm also thinking that when assessing regional impact of transportation the analysis should be end to end: if a ferry is slightly worse, but then you arrive and are walking around or taking an electric bus/tram, then on the whole it might be lower emissions for that one trip than driving, with the additional external benefit of one less car in an urban environment (fewer harmful particulates, fewer cars around which afford us to reshape public space to give more space to pedestrians, cyclists and public transport, less noise, lower chances of collisions, etc). If people within a city are using PT, and 5% come into the city by ferry, does that provide a benefit in terms of CO2 emissions compared to the status quo? I would be surprised if it didn't, but of course don't have numbers in either direction.