1) The world's largest flower is the Rafflesia arnoldii, which can grow up to 3 feet (1 meter) in diameter and weighs about 15 pounds (7 kilograms).

2) The world's first car radio was invented in 1929.

3) The average person spends about 4 years of their life driving a car.

4) The word "guitar" contains three vowels: U, A, and I.