i did not make this gif so i don't exactly know how it was made, but i think he may be animating with after effect or premiere pro, and for example, he can make a car, put it 100 pixels away 2 seconde later, and premiere pro will make the car move from the starting point to the end destination. It may have been done like that.

Or he just took a video and used a plugin to make it into pixel art style.