Ask Dr. Lynn – What marijuana impaired driving laws are already on the books? By Hound Labs | 2017-04-07 <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span>Hound Labs CEO, Dr. Mike Lynn, discusses the current legal environment surrounding marijuana impaired driving. Posted in Ask Dr. Lynn and tagged Marijuana DUI