You can certainly find something worthwhile on the penninsula this weekend.
Pebble Beach Concours d'Elegance, The Quail, several auctions (RM, Bonham's, Sotheby's), and the Historic Races at Laguna Seca (personal favorite) are all going on.
If Concorso Italiano is boring one of the others should fit. Bring your wallet admission isn't cheap.