HarborNissan.com Billboard

Want to win a job like this?
This customer received 43 billboard designs from 10 designers. They chose this billboard design from Alison as the winning design.
Join for free Find Design Jobs- Guaranteed
Billboard Design Brief
I need a design for a billboard. It needs to be simple, clean, modern, bold. I'd like to see some examples of just black and white with just "Harbor Nissan.com" and no other text. Also, I'm open to seeing some with bold colors or patterns.
I'd like to see examples with the tag line "Have you got your's?" and some without the tag line.
We put Harbor Nissan.com decals on the back of our cars and our customers get free oil changes for life if they keep it on. We have thousands of customers driving around town with them. You could play around the idea of having it on the back of the car for the billboard. But again, I really want it simple and clean. Not busy.
Play with the colors and fonts! Be creative! Good Luck!
Updates
Project Deadline Extended
Added Tuesday, February 25, 2014