spring flowers and bulldozers in my garden?

What can be more fun than having bulldozers, dump trucks and diggers in your own front year? And the noise? It is music to a 4 year olds ear. This is better than Bob the Builder, better than any cartoon, better than school, better than lunch, better than ANYTHING - trust me. This isn't across the street at the stoplight, this is right here, right now, all day. We will now make use of all our fun yellow digger trucks and watch and play along. But - wait..."why doesn't my digger truck pick up up rocks exactly like that one? and why doesn't my truck make the same noises?" and why why why....