Methane powered engines?Jumbo Jets are powered by elephants.
I was on a bus with my friend about 20 years ago, and he ate his ticket. The conductor asked to see his ticket but all he had was a ball of wet soggy paper.All bus tickets are printed on edible paper.
Researches in New Zealand have developed a tearless onion. It turns off the gene which produces the enzyme that causes a person slicing an onion to cry.
Every car handbook says "Please Read Before Driving", yet every single day people recklessly drive to work without first having read the manual cover to cover over their cornflakes.