The Cast-Iron Rumble Strip

I revved away from the skateboard and gunned it toward the lawn border! Right at the edge of the concrete, a round cast-iron water meter cover sat flush in the ground. Raised crosshatch grid all over the dark metal! Instant high-speed rumble strip! I hit the iron lip at wide-open throttle—b-r-r-r-t! The textured diamond plate buzzed violently through my front axle, rattling every panel hinge with pure mechanical feedback. Right in the center, a small hinged brass inspection flap was sitting ajar. Wham! My front bumper popped the hatch straight open with a ringing clack! Full brake drift! Nailed the precision hit!