Meet the Dareway Revolution 12V Ride-On: a personal transporter that moves your kids around and lets them listen to their music. It can spin 360 degrees. You can move forward with the foot accelerator and stop by using the electric brake. The LED battery gauge lets the rider know when it is time to recharge.
The handlebar can be adjusted to 3 different height positions. You also get an iPhone holder. More information is available here.