World 8 - Level 6
Your goal is to avoid the Z-Bot traffic, then build a bridge along the two yellow paths. To do so, dump the boxes marked with green "X"s into the water, and use the remainder. By pushing on of these boxes into traffic (at the blue "X"), you can create quite a show! This will also clear enough traffic to allow you to explore the right edge of the level (white arrow) where more boxes are hidden. Once the two yellow paths are complete, start building along the purple path and collect your coins.