Here are some quotes from the site where I found the last few pictures supporting advertising on Hummers:
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>
"Having our company logo on the Hummer is the single most powerful marketing tool at our disposal. It has an enormous impact across all demographics through it's diversity and sheer mobility!"<HR></BLOCKQUOTE>
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>
"The Hummer was an instant attraction - there was no missing it! They are so rare and so adored that people just went nuts as soon as they saw it."<HR></BLOCKQUOTE>
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>
"Having the Hummer has definitely worked for us. People come around wherever we go to touch it, see it, feel it and run their hands over it just to say they've seen a Hummer. It works wonders for our recruiting drives targeting 17-29 year old men. The Hummer is a high status symbol, and it is the thing to have if you want to be regarded as a high status organization. It is our main attraction when we go all around the world."<HR></BLOCKQUOTE>
Note that these quotes refer to the use of H1 Hummers.