Hippopopopo today releases Road Vehicles 1.1 for iPhone, iPod touch and iPad. The application is a fun game for youngsters to learn about vehicles, incorporating auditory, visual and kinesthetic sensory teaching tools. Children use their finger to move each of the app’s vehicles to their correspondingly correct building. Along the way, children learn the sound each vehicle makes. The app offers five public vehicles but users can unlock fifteen more through the in-app purchase option.