1) The world's most expensive car is the Bugatti La Voiture Noire, which sold for over $18 million.

2) The Internet of Things (IoT) refers to the network of physical devices, vehicles, appliances, and other objects embedded with sensors, software, and connectivity.

3) Banks play a vital role in the economy by facilitating the flow of funds between savers and borrowers, providing loans, and offering various financial services.

4) The world's largest ocean, the Pacific Ocean, covers an area of approximately 63 million square miles.