What a let down

I remember an ad I saw when I was a child, with a Scalextric car that whizzed through the air with sparks flying and fireworks exploding all around it.

I told my parents, 'I want one of those'.

They said, 'It doesn't really do that, you know.'

But how could they show a car that flew with fireworks if it didn't really happen? I wanted to see for myself.

I pestered my parents. They bought me the car. And of course it didn't.