This is just insane. Not only are cars themself mostly unnecessary, if the right infrastructure is provided, but SUVs also use more resources to run and be produced then small cars, without any advantage over them. So an obvious waste, which could easily be cut to reduce emissions.
Source IEA: https://www.iea.org/commentaries/suvs-are-setting-new-sales-records-each-year-and-so-are-their-emissions
Ships don’t work that way. There are a couple of reasons other than fuel economy why they keep building them as big as they can:
Hull speed is proportional to waterline length. In other words, bigger ships can go faster.
Bigger ships have better economies of scale for the crew.
Also, winds aren’t reliable enough for any ship to sail 95% of the time, unless you count being becalmed as “sailing.”