I am reversing. While the car is still moving backwards, I switch gears from R to D, and press the accelerator to start moving forward. After a bit the car stops going backward, and starts moving forward.
My dad always told me that I should wait for the car to come to a complete stop before switching from R to D. He said that unless I did this, I would be damaging my engine. Is he correct? (Note that I'm going at extremely low speeds during this entire switch).