3M Completes Sale of Priority Control and Traffic Detection Businesses to TorQuest Partners Inc. ST. PAUL, Minn. and TORONTO, Canada – June 28, 2007 – 3M announced today it has completed the sale of its Opticom Priority Control Systems and Canoga Traffic Detection businesses to TorQuest Partners Inc., a Toronto-based private investment firm, and members of the senior management team of the businesses.