Majic Wheels Remote Controlled Car
The Majic Wheels Remote Controlled Car uses adhesive wheels to climb up walls and ceilings. Though the adhesive, available only from Majic Wheels, must be replaced when it gets dirty, the car has the advantage of being quieter than other toys with similar abilities, as it doesn't use a loud vacuum. You can also purchase the wheels alone and install them onto your own remote-controlled car to give it the same wall-climbing powers.
RC Aero Laser Spider
Takara Tomy's RC Aero Laser Spider has a light sensor and comes with a "laser" gun as its remote control. When you use the gun to shoot red light beams, the sensors catch the light and follow them wherever you project them, allowing them to crawl along walls and ceilings. These cars were introduced in November 2009, and are available for about $65.
Air Hog Zero Gravity R/C
The Air Hog Zero Gravity R/C car is a small 5-inch car that comes in a variety of colors and styles. A tiny fan installed in the roof of the car creates a vacuum that gives it the suction necessary to climb walls and ceilings. This car has a limited playing time -- about 10 minutes after a 30-minute charge -- and costs about $50.