Is it possible to add a video at the start of your game in the Blender Game Engine?

Game Engine Game Engine Support and Discussion
1

I’m working on a car game and I want to have a small tutorial on how to control the vehicle before the game begins.

2

Yup 2 ways:
Have a video with the videotexture module (look at tutorialsforblender3d.com for a script)
or animate it and have it real-time generated