@neauoire
at least the Nissan models shown in that page are among the least polluting vehicles sold right now: they easily do more than 20km/l. people should learn that 20-25cm of clearance from the ground doesn't mean "polluting vehicle".
there are some small cars like FIAT Panda or the nano FIAT 500 that pollute much more.
anyway, most people with sailing yachts use them with the engine: what should we do? deflate their ballast? 😄 come on...

tyreextinguishers.com/how-to-s