VTech Go! Go! Smart Wheels Aircrafts 2-Pack Use the SmartPoint vehicles to activate SmartPoint locations on Go! Go! Smart Wheels playsets (each sold separately), and theyll respond with different phrases and more. Press each toy vehicles light-up button to hear three sing-along songs and learn the letters A and H Push the vehicles to hear fun sounds and melodies. While a melody is playing, push them again to add fun sound effects. SmartPoint vehicles also work with Go! Go! Smart Animals playsets (each sold separately). For even more fun, collect other Go! Go! Smart Wheels vehicles and playsets (sold separately).