A hose connects the tank — which can be replenished by opening a valve in the footwell — to a desalination machine that can produce 6 gallons of fresh water an hour.

Then the material in the feeding tank enters the feed hose and the charging cylinder via the tee piece under atmospheric pressure.

The tank overflowed a little and Thomas hung up the hose and put on the cap and wiped away the splash of gasoline on the rear fender.