I want the card to stand out and be unique, so whatever artistic touch you want to add to it would be great...maybe adding a car logo or any picture having to do with windshield replacement.
Maybe some splash of color (red maybe like the Yelp logo on my website) to add color contrast to the card. Maybe when you add the part that I mentioned above about "Check out on great online reviews" it would make sense to add the Yelp, Google and Yahoo logos.
You'll notice that there are some different versions of my logo...feel free to use whatever color scheme you think might work although I think the white backgrounds seems to give the best contrast. The new gray background looks dull and not as crisp. Also just to mention in again, I like the brighter blue as it it in the PDF version of my business card but inocorporated with my new logo.
I am also attaching my magnet that we send out to our customers.