TV show Top Gear conducted an extreme test of a Toyota pickup truck by leaving it on a beach to be taken by the tide, leaving it on top of a highrise building that was demolished, and setting it on fire. It still ran after being repaired with only the tools in the truck’s toolbox.
USPS Mail Delivery Vehicles are 25-30 years old and use engines designed in the 1970’s that get 10 MPG.
The mail truck most commonly used by the USPS was produced by Grumman and is called the Long Life Vehicle. Production began in 1987, and a new one hasn’t been produced since 1994.