Straight Track Ahead

I discovered a continuous, straight groove running the entire length of the oak floor. Click-clack, my wheels locked right into the seam. I leaned forward and built steady momentum, gliding smoothly along the line until a stray yellow pencil blocked the way. Turn around? Not a chance. I lined up my front bumper, leaned in, and pushed with all four wheels until the pencil rolled aside with a sharp rattle. The line cleared, and I coasted straight to the edge of the hallway rug.