Shadows sometimes can hold a lot of memories and such.
I had a toy red one of these that I would ride up and down the driveway at the Allen Avenue house. My parents rented the second floor, and my grandparents did a lot of babysitting, as I remember. The house had a big barn attached, and I often did a lot of exploring in there, under my grandparents' watchful eyes. I just stumbled upon it one day. It was piled in the back corner, looking like it was meant for a dump run in the near future. I got it upright and took it for a spin across the oil-spattered planks of the barn floor. To my surprise, even though the ride was terribly bunpy, it worked! That spring and summer, my next door neighbor Billy and I had loads of fun on it, driving it all around the yard, working the pedals.
It's an easy one. What am I?