Race through Sparkton Hills in Rusty Rivets' Supercharged Kart! Kids can build, take apart and rebuild Rusty's Kart, discover over 50 sound combinations! Press the steering wheel to activate basic lights and sounds. Then unlock three possible modes: fast, turbo and supercharged! To reach fast mode, add the spoiler and turbo engine to Rusty's Kart. Hit turbo speed by adding the turbo engine, spoiler and charger. Max out at supercharged speed with the super spoiler and engine! The more pieces you add, the more sounds you'll discover! Once you've built Rusty's Kart, put Rusty (figured included) in the driver's set and zoom to adventure! This set is a great way to introduce kids to building kits. Little hands can easily grip the colorful pieces, as they build, take apart, then rebuild again and again! Once built, kids can use the real working wheels to race across Sparkton Hills, imagining all new adventures for their favorite young inventor. Ready for supercharged fun? Then combine and design Rusty Rivets' Supercharged Kart!