1) The word "telephone" contains five vowels: E, E, O, E, and E.

2) The concept of banking dates back thousands of years, with evidence of early banking activities found in ancient civilizations such as Mesopotamia and Egypt.

3) The largest known dinosaur, Argentinosaurus, weighed around 70-100 tons and measured up to 100 feet in length.

4) The concept of self-driving cars, or autonomous vehicles, is being actively developed by companies such as Tesla, Google (Waymo), and Uber.