If you click on my gallery, you will see a couple of the lighted ones from Windrestrictor.com. I have had two roadsters. They may not block quite as much as the ones that go behind the seat backs but are much more attractive and fun. I designed my own and I believe they still do that. They are simple to install, the two screws holding the umbrella rack, behind the seats hold it on. I power mine with a cigar adapter however you can use a battery pack, hook them up to the brake lights to only light when you brake or to the tail lights so it is on when your lights are on.

AWSOME!