Caterpillar racers in action! Source

Caterpillar racers in action! Source

Caterpillar racers in action! Source

We once again harnessed the power of air to move our caterpillar racers that we made. Videos to come shortly. Source

Wind racers in action! Source

Wind racers in action! Source

Wind racers in action! Source

Wind racers in action! Source

Wind racers in action! Source

Yesterday’s BrickLab was building wind racers! Source