hughes, cbs news, los angeles. >>> they are calling it carmageddon, next weekend they are closing a 10-mile stretch of the 405 freewayest los angeles, for 53 hours. the 405 carries half a million drivers even on saturdays and sundays. the shut-down is part of a lane- widening project but the road rage is already evident. city leaders are urging people to leave town ordeal with surface streets. >>> summer highs and lows still around, our pinpoint forecast next. and hitting the beach without the cars, the treat of sunday streets. next. ,,,,,,,,,,,,,,,, great highway was closed as part of t ets" >>> what better way to enjoy a sunday summer day than taking over a beach front road. oh, that guy does not look happy. san francisco's great highway was closed as part of the sunday street event. skaters and bikers were given free reign of the road without concern for cars. there were also activities, music and a wandering circus. august 14th. those folks enjoying a sum day with sweatshirts on. >> that's right. probably more pleasant bike ride when it's cooler out there. they have got the sweatshirts on, that's going to be the