Looking for a Ride-on toy? Walmart has the Rollplay Flex Kart 6-Volt Folding Ride-on Vehicle Toy for only $68 Shipped! (Reg. $150) Introducing the first electric foldable car, the FLEX Kart from Rollplay! The FLEX Kart brings both convenience and fun to any little one and parents day! The 6V battery allows riders to cruise up to 2 MPH for a fun and safe ride.