Turtle shells not included. Target has the Nintendo Super Mario Kart 24V 3-Speed Drifting Ride-On Racer (414012) on sale for $360 - 25% off Target Circle coupon (click "Apply offer"; Exp 11/18) = $270 with free shipping. Some accounts get another $5 off ("Just for you" coupon or $10 off $40+ pickup order coupon, YMMV.

3 forward speed options + reverse, travels at speeds up to 8 mph, for ages 3 to 8 years old. In-game sounds built-in.