You might want to take more time framing your shots. Push the shutter halfway down, then look what's in the frame, what you want centered and focused, etc.
People in the pic admiring the truck may enhance the scene, whereas walking away, looking away, doing something else are a distraction from the center of attraction.
You might want to choose vivid color to add drama and richness.
You might want to push the shutter halfway down while the center frame includes both he the darker and lighter portions of the pic to get the light setting right, then, still holding the shutter halfway, frame the pic the way you want, then push down the whole way and take the pic. This will help avoid the bleached out grass, etc.