Segway Made A Robot That Connects To Your Two-Wheeled Scooter | TechCrunch
Robocraze 2WD Smart Robot Car Chassis | Two Wheel Drive Robot Car Chassis : Amazon.in: Toys & Games
Rumani® 2 wheel Robot Smart Car Chassis Kit BO Motor wheel Kit with Speed Encoder, 2 Wheels, 2 Bo Motor , 1 Caster Wheel and Battery Box for Arduino DIY (2 Wheel Kit)
Amazon.com: The perseids DIY Robot Smart Car Chassis Kit with Speed Encoder, 2 Wheels and and Battery Box for Arduino/Microbit/Raspberry Pi (2 Wheels) : Toys & Games