message: Set motor volume to zero on startup (Issue 69)
diff: @@ -194,8 +194,8 @@ class Vehicle {
  // and allows us to ineract with it, and its parameters from code.
  _audioComponent = _pawn->CreateDefaultSubobject<UAudioComponent>(TEXT("PropellerAudioComp"));
  - // Stop the sound from sound playing the moment it's created.
  - _audioComponent->bAutoActivate = false;
  + // Set the audio component's volume to zero
  + _audioComponent->SetFloatParameter(FName("volume"), 0);
  // Attach the sound to the pawn's root, the sound follows the pawn around
  _audioComponent->SetupAttachment(_pawn->GetRootComponent());
  