These two "puzzles" (which aren't really puzzles) are of two things, so in the first set (as well as in the second), the thing you're looking for is the same in each photo - there's not something different in each one.
The answers are at the bottom of this post.
If you guessed the "Black Series" emblem, you're correct. There is a CLK 63 AMG Black Series, SLK 55 AMG Black Series, and SL65 AMG Black Series, but no E 63 Black Series.
"Open 24 Hours" and "No Loitering After Store Hours"?!
In fact, I 've seen this sign at multiple Harris Teeter stores.