CYCLISTS ARE INVOLVED IN CRASHES with motor vehicles way too often. To minimize this problem cyclists need to obey the rules of the road, utilize safety equipment and become adept bicycle handlers. Motor vehicle drivers must understand that cyclists have a right to the road; they too need to obey the rules of the road, and be 100% focused on how they're handling their 4000+lb vehicle. A little respect and courtesy from both groups will go a long way toward reducing injury and death.
This is not necessarily an endorsement of the product. Read the story here, then you be the judge.