While speeding is the leading cause for most traffic accidents
False. http://www-nrd.nhtsa.dot.gov/cats/listpublications.aspx?Id=A&ShowBy=DocType Document 811630 pages 4 and 6 demonstrate that alcohol is just as big a factor in fatal crashes. In fact, I would argue that it is a much bigger factor because a lot more people speed than drink and drive.
"If there isn't a population problem, why is the government putting cancer in the cigarettes?" -- the elder Steptoe, c. 1970