Cars are perhaps the most common way to transport people and goods. They may vary in size and design, but a common definition of motor vehicles is that they primarily move on roads and have wheels.

Cars began to be used worldwide during the 20th century, and the developed economies of countries rely on them.

Some questions that arise are:

• Who was the inventor of the automobile?
• What are the main parts of a car and how do they work?
• How important is safety and comfort for passengers?