 As the racers are coming, Wile E. and Sylvester catapult rocks to flatten them, but this backfires when the rocks crash into each other and land on Sylvester and Wile E. instead.3.The duo then places iron pellets under bird seed and leaves slices of cheese; while the racers eat, the two attach a grenade to a roller skate with a magnet, but only the magnet part of the roller skate leaves and when Wile E. checks it, the grenade blows up in his face.