As a resident of Los Angeles county I can fully sympathize with your wishes for a less intense, nay, hectic place to spend your vacation time. LA county has a larger population than 43 of the 50 states and every one of those people owns two cars and both are on the road all the time. Well, OK, a bit of exaggeration but it does feel that way any time you're on one of the 515 miles of freeways in the county.
Nevertheless, if someone does force you at gunpoint to visit LaLa land, there are a couple of places that folks who frequent this forum should be sure to visit.
The Petersen automotive museum has one of the finest collections in the world...
And the Nethercutt collection extends beyond rare classic cars to include musical automata
The Nethercutt Collection