1. Change in Speed: The most obvious way is by simply increasing or decreasing the car's speed. If the car accelerates (speeds up), its velocity increases. If it decelerates (slows down), its velocity decreases.

2. Change in Direction: Velocity is a vector quantity, meaning it has both magnitude (speed) and direction. Even if the car maintains a constant speed, changing direction will change its velocity. For example, a car turning a corner at a constant speed is still changing its velocity because its direction of travel is changing.

3. Change in Both Speed and Direction: A car can also change its velocity by combining both changes in speed and direction. Imagine a car accelerating while also turning a corner. Both its speed and direction of travel are changing, resulting in a significant change in its velocity.