Demand was so strong for California's $2-billion tax-free bond offering that Treasurer Bill Lockyer upped it to $2.5 billion. The bonds, which will fund state infrastructure projects, are giving investors a maximum yield of 5.65 percent - that's for a 30-year bond - and they're exempt from federal and state income tax. Considering the crazy-low yields on other products, that's quite a deal. (LAT)