Interactive construction rigs for kids! Play with them like with die-cast model toys! What's the difference between bulldozer and motor grader? You can learn it, and many other things from our expert Jeff. -- Appysmarts.com (score 79/100): "What we liked: the concept, beautiful detailed illustrations and animations, extra information about vehicles and vehicle parts, sound effects, easy operation." See video review on Youtube! -- This app contains 10 high detailed vehicles with interactive functions to play with: - Wheel loader with working bucket - Road roller with emergency lighting - Bulldozer with working blade and ripper - Concrete mixer with revolving drum - Articulated hauler (dump truck) with working open-box - Mobile crane with working boom - Tracked excavator with working backhoe - Motor grader with working blade - Heavy hauler (giant dump truck) with working open-box - Compactor with working blade + opening doors, working wipers and front lights! + Talking character - Jeff the excavator operator Highly detailed graphics and realistic sounds of engines, brakes, hydraulics etc.