Too many blank thumbnails Rated 2 out of 5 stars

Very nice add-on, esp the archive (Wayback link), and preview feature.
BUT: too many "PREVIEW COMING SOON" thumbnails, and on too many searches...Alfa Romeo is just 1 example.
Search Previews add-on shows many more thumbnails. Test them side by side.

This review is for a previous version of the add-on (2.1.1-signed.1-signed).