Pickup truck bed and liquid-propellant rocket engine: what they have in common

1. Step 1. Pickup truck bed — is part of — Pickup truck. An open body.
2. Step 2. Pickup truck — is a kind of — Truck. A light truck.
3. Step 3. Truck — is part of — Multiple rocket launcher. On a truck chassis.
4. Step 4. Multiple rocket launcher — uses — Solid rocket motor. Rockets.
5. Step 5. Solid rocket motor — is part of — Space Shuttle. Boosters.
6. Step 6. Space Shuttle — has part — Liquid-propellant rocket engine. Hydrogen-fuelled main engines.

Open Evothings