"I've spent eight years in traffic services, and I was a crash reconstructionist for five years before that," Michigan State Police Lieutenant Gary Megge told the News. "So I've seen my share of fatal wrecks, and I can tell you: Deaths are not caused by speeding. They're caused by drinking, drugs and inattentiveness. The old adage that speed kills just isn't realistic. The safest speed is the speed that is correct for that roadway at a given time. A lot of speed limits are set artificially low."