This Disney Sofia the First Convertible Car 6-Volt Battery-Powered Ride-On is now $99 at Walmart.com. Plus, shipping is free making this the lowest price we found by at least $51. This princess convertible car has one forward speed plus a reverse speed, both with a maximum speed of 2.5-miles-per-hour. It drives smoothly on any flat surface, and works best outdoors on surfaces that aren't rocky. It features Sofia the First graphics on a pink car with black wheels and a white seat. It delivers one to three hours of run time. Sales tax is charged in most states.