Canada

You doubt what's true? That transportation / shipping is a major contributor to climate change?

"the transportation sector contributes 20.2% of global CO2 emissions"

https://www.undp.org/policy-centre/istanbul/press-releases/windrose-technology-supports-undp-research-universities-zero-emission-trucks-zets

International cargo container shipping is only about 2% of global CO2, but that's still 10% of all transportation-related output coming from shipping alone. Imagine if every 1 in 10 vehicles you saw on the road was a little boat, that's how much international shipping contributes to CO2.

You shouldn't convert everything to EVs overnight. EVs aren't the answer, public transport and alternative transport like biking is the answer. A nasty deisel-based bus almost certainly contributes less to climate change than 30 personal EVs, especially if you consider the entire life cycle.

Transport is going to be the hardest thing to convert to not use fossil fuels, because the biggest advantage of fossil fuels is the massive energy density of the fuel. An EV has to lug massive batteries around with it everywhere it goes, but a gasoline car just needs a relatively small fuel tank. For small personal vehicles it might be possible to accept the compromise, but it's going to be a lot harder to get rid of fossil fuels for buses, trains and especially airplanes and ships. So, the answer there is not to switch to EVs, it's to reduce the use as much as possible. Stop flying around the world. Stop ordering things from overseas. Stop driving personal vehicles and take public transit.

Right now, the biggest sector contributing to global CO2 is electricity and heat production, but solar and wind are getting so cheap that it's just a matter of time for those to be converted. You don't even need to give incentives, the cheapest solution is now the cleanest. The energy density of the fuel doesn't matter in those cases. But, transport's going to be a harder problem, and it's the one we should be working on now.