this is a closer like we have never seen in the area. everybody will be impacted. july 16 and 17, it will be an absolute nightmare. the freeway will be shut down for 53 hours as a $1.3 billion expansion project. southern california is bracing for what is being called carmaggedon. it s a choice that borders on sanity. don t do it. stay the hell away from the 405. reporter: a ten-mile stretch of the highway connecting western part of l.a. to the san fernando valley. when completed driver drivers ia new carpool lane can save a minute a mile. when the particular 10-mile section of the 405 is completed we ll have the largest car tulle lane in the world. 50 miles. reporter: the project and freeway closure has many businesses shutting down or changing hours for the weekend. some, though, are embracing the driving dilemma and hope to capitalize on congestion. we are doing the gridlock martini, $3. the road rage cocktail. that is $3.