Kids can experience the amazing power and acceleration of this high-speed LEGO Technic 42072 WHACK! model car. This crash car features a lime-green, red and gray color scheme with racing stickers, sturdy front bumper, large rear spoiler and wide black rims with low profile tires. This advanced building kit comes with a race car equipped with a pull-back toy motor and a new-for-December-2017 toy engine pop-out function, which is activated on impact. Combine with the 42073 BASH! pull-back model for creative play possibilities or to create the WHACK! ‘N’ BASH! combi model.