Find a way to make your thumbnails 150 x 150. That's square. When you submit rectangular thumbnails they get distorted in the preview. We'll start rejecting your distorted thumbnails going forward.
Then the tool you use to create your thumbnails is flawed. Look at your thumbnail. Then look at Google SV. Your car is squashed and shortened in the thumbnail compared to the original. Please don't submit any more distorted thumbnails.