Meh.. it has happened to me as well. Part of the reason is this
www.fuh2.com
Not like they know who you are or what you are about so I don't ever get worked up about it. Just an idiot who thinks just because you drive a Hummer you are classified as a certain type of person.
Funny how in the city a 2006 Mustang GT v8 gets 1 more miles per gallon than the H3.. Think they realize that one?