Police in Fort Worth, Texas, forced drivers off the road to collect “voluntary” blood and saliva samples. The study was funded by the National Highway Traffic Safety Administration. ACLU says it was an “abuse of power” and calls for an investigation. Police chief: “We realize this survey caused many of our citizens’ frustration and we apologize for our participation” NHTSA spokesman: “Participation is voluntary. It’s not about detaining anybody, because the survey is about making sure the traffic is safe””]