Android : SurfaceView in Android Wear (API 21)

I want to use a SurfaceView in an Android Wear project in order to render a parallax background (see attached screenie).

The problem: the SurfaceView disappears after about 1000ms but the car remains so there is a pink car on a black background.

The SurfaceView is added via XML layout definition:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:context=".MainActivity"
            tools:deviceIds="wear_round"
            android:id="@+id/rlMain"
            android:background="#FF3333FF"
            android:keepScreenOn="true"
            >
    <com.kiteflo.sniper.BackgroundView
        android:id="@+id/backgroundView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true"
        android:scaleType="centerInside"
    />
</RelativeLayout>

The car is added programmatically:

BackgroundView bgView = (BackgroundView)findViewById(R.id.backgroundView);
RelativeLayout rlMain = (RelativeLayout)findViewById(R.id.rlMain);

// add car
CarView cv = new CarView(selfReference, new Car(0, 0,   BitmapFactory.decodeResource(getResources(),
                    R.drawable.car_pink)), bgView.getBackgroundModel());
rlMain.addView(cv);
...

Did anybody experience the same behavior and maybe found a workaround for this one?

Thanx in advance, Florian