Banking the Big Curve

I coasted out the back gate, zipped down the sidewalk, and rolled straight into the skate park! Ahead opened a massive, smooth concrete bowl scooped right into the earth! No tapping the brakes—I plunged over the lip! Speed built in a heartbeat—whoosh! The curve scooped me upward, pressing hard against my seams as I carved a wide, sweeping arc along the sloped grey wall. Up, up, right beneath the metal coping rail! Gravity caught up, spun me in a neat turnaround, and sent me gliding smoothly down to rest right in the flat center. Pure momentum! What an arc!