Vehicle Engine Does Not Stop When Pressing "E" in Vehicle Sample

Steps to reproduce:

1. Create a new Unity project
2. Open the Package Manager
3. Install the com.unity.vehicles package
4. Select the Vehicles package and open the Samples tab
5. Import the Advanced Vehicle Sample
6. In the Project window, open the AdvancedVehicleScene
7. Enter Play Mode
8. Press the W key to move the vehicle
9. Press the E key to stop the engine
10. Observe the behaviour of the vehicle

Actual results: The vehicle engine continues to run after pressing the E key

Expected results: The vehicle engine should stop when the E key is pressed, and there should be a clear feedback of this action to avoid confusion

Reproducible with versions: 0.1.0-exp.10 (6000.2.0b3)

Tested on (OS): Windows 11