Why it worked
The video uses a common marketing tactic of contrasting a perceived, possibly inferior, product with the actual, superior product being sold. The use of a popular football team's logo adds an element of fan appeal, driving engagement.
Summary
The video contrasts a DIY cardboard projector with a real car door projector that displays the Manchester United logo. It highlights the actual product sold by DriveGoal, implying a difference between public perception and reality.