There is an underwater mailbox in Japan and you can send a mail from it.
The deepest underwater box usually receives around 1,000 to 1,500 pieces of mails every day, many sent by family members for their loved ones, and this little piece of infrastructure carries a special significance. It is located in Susami Bay, Japan and was placed 10 meters deep off of the coast. You can buy a waterproof card, write a message on it, and send it to whomever you want while diving.
"Car on the right has the right-of-way" is true in the US as well - look it up - but the importation of a culture with no rules has badly eroded the observance of this standard.
#12 1000 a day or a year?
Some backward third world country still living in 1932 ?
A gallon is a part of a binary volume measurement system. It is very efficient (ask your computer, which spends way too much time converting to base-10). Volume is also correlated with the weight of water on Earth, "A pint (1/8 gallon [volume]) is a pound (16 ounces [force]) all the world round".
The French had a chance to make the Metric system similarly grounded in the world we live in, but they hated the English I guess so they decided to go with a less useful, arbitrary standard instead.