Wearing high visibility clothing while out on the road is a great idea - it means you're more likely to be seen by the people behind you. Promoting safety on the road by having a suitable slogan on your clothes is also a good idea - it never hurts to be reminded that we should be safety conscious at all times. This man has got so many things right, but sadly he's got the single most important thing wrong.
If you're going to ask others to think safely, it probably isn't a great idea to get into the back of a pickup truck, and let your friend start driving you down the road. He doesn't have any seat belt or safety equipment, and a sudden stop could send him flying out of the truck in any direction. The only positive in that scenario is that he should be easy to see, so other drivers will be able to swerve out of the way when he lands on the road. This is a guy who should practice what he preaches!