What are some hidden elements that are related to public transportation in Little Alchemy 2?

In Little Alchemy 2, there are several elements related to public transportation that you can create. Here are some of the key combinations to unlock these hidden elements:

1. Bus:
- Car + Bus Stop: Combine a Car with a Bus Stop to create a Bus.
- Bus Stop + Vehicle: Alternatively, you can combine a Bus Stop with a Vehicle to get a Bus.

2. Bus Stop:
- House + Bus: Combine a House with a Bus to create a Bus Stop.
- City + Bus: You can also combine a City with a Bus to get a Bus Stop.

3. Train:
- Metal + Steam Engine: Combine Metal with a Steam Engine to create a Train.
- Steam Engine + Wagon: Alternatively, combine a Steam Engine with a Wagon to get a Train.

4. Subway:
- Train + City: Combine a Train with a City to create a Subway.
- Train + Underground: You can also combine a Train with Underground to get a Subway.

5. Airplane:
- Bird + Metal: Combine a Bird with Metal to create an Airplane.
- Bird + Steel: Alternatively, combine a Bird with Steel to get an Airplane.

6. Helicopter:
- Airplane + Blade: Combine an Airplane with a Blade to create a Helicopter.
- Blade + Air: You can also combine a Blade with Air to get a Helicopter.

7. Boat:
- Water + Wood: Combine Water with Wood to create a Boat.
- Water + House: Alternatively, combine Water with a House to get a Boat.

8. Ship:
- Boat + Boat: Combine two Boats to create a Ship.
- Boat + Big: You can also combine a Boat with Big to get a Ship.

9. Sailboat:
- Boat + Wind: Combine a Boat with Wind to create a Sailboat.
- Boat + Fabric: Alternatively, combine a Boat with Fabric to get a Sailboat.

10. Rocket:
- Metal + Fire: Combine Metal with Fire to create a Rocket.
- Airplane + Space: You can also combine an Airplane with Space to get a Rocket.

These combinations should help you unlock various public transportation-related elements in Little Alchemy 2. Remember to experiment with different combinations, as sometimes there are multiple ways to achieve the same element. Happy crafting!