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

2) The word "computer" contains three vowels: O, U, and E.

3) The abolition of slavery in the United States was officially proclaimed with the ratification of the 13th Amendment to the Constitution in 1865.

4) Matcha, a finely ground powder made from specially grown and processed green tea leaves, is a cherished part of Japanese tea culture. It has a vibrant green color and is known for its earthy and umami flavors. Matcha is prepared by whisking the powder with hot water and is traditionally enjoyed in tea ceremonies. It is also used as a versatile ingredient in desserts, beverages, and even savory dishes, offering a unique and distinctive taste.