Answer:
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
I pass before the sun but make no shadow. What am I?
I spend the day at the window, go to the table for meals, and hide at night. What am I?
When you are inside me you will be encouraged to slam other cars.
The answer I give is yes, but what I mean is no. What was the question?