With over 270 pieces, Vroom! Stem V8 Model Combustion Engine, both children and parents alike will be amazed by the realistic engine simulation. After enhancing one's divergent thinking, manual dexterity, and gratifying sense of accomplishment, Vroom! Stem V8 Model Combustion Engine will be the prize trophy on any car lover's desk, shelf, or classroom. With a simple press of the power button, prepare to be amazed. The cooling fan spins, pistons fire up and down, light bulbs flick on and off in perfect sequence mimicking the air-fuel combustion process, and since it runs on three AA batteries (not included) there is no need to worry about pricy gasoline to enjoy the show.
