Tunnel Navigation

I rolled toward the coffee table to map out a whole new shortcut! The space between the table leg and a stack of big art books looked just like a narrow tunnel. I charged straight in! Halfway through, a loose cardboard bookmark was sticking out across the gap. I tucked my front bumper down, revved my wheels, and gave it a sturdy push. It bent smoothly aside against the books! I chugged right out the other side. Now this lower express line is officially open for transit!