I don't recommend tailgating.
We don't have car pool lanes on our interstates, we have
passing lanes. If you aren't passing someone and there is a car behind you, the law is to move right. There are signs along the highway reminding drivers of that rule, but lot's of idiots ignore them.
I saw this great decal across the top of the windshield on a CTS a couple of days ago.
Move over racing banner decal for any vehicle decals sticker - $13.00 : House of Grafx, Your One Stop Vinyl Shop