There are many vehicle contraptions in bad piggies.Which I like to put in 3 categories: thrust, engines and blocks.
thrust has 2 mini-sections continuous and one-shot. While block has only 2 of its kind: wood and steel. and engines have 3 of theirs: V1, V2 and V8
Continuous items are parts that work until you switch them off by your self. Fans, propellers, rotors, active wheels and pig blowers are among these parts. All of these except the blower work using a motor.
One-shot items can be used once in a contraption and once only. Fireworks (red and blue) and detachable supports are amongst these items.