I would say just drive normal. People will see it. We're not all going to the same place. Some people will pass you, others will see you as you pass.
Also, you might want to consider adding a "@papa-pepper" sticker as well. That will have a double effect as it will allow other steemian s to know it's you and look you up. It will also be useful to non-steemians as your steemit profile is the first thing that comes up when you google "@papa-pepper".
Good point!
You could also hang around your vehicle more. :) Since people see the logo and not know what it means. If they ask you can tell them.
Taking it further, you can hand them little pieces of paper with the Steemit URL (Or it could be an excuse to have business cards made? hehehe)