Mack Truck Ride-On (Black) for $69.00. Select free site-to-store for in-store pickup at Walmart to save on shipping. Otherwise, shipping is $4.97 for a total of $73.97 shipped. Here is a screenshot for your reference. This truck features a speed of 0.5 to 0.6 mph, 45-lb. weight capacity, and uses one 6-volt battery (included).