The personal incomes of Americans rose 0.3 percent in July, but their spending climbed even faster at 0.8 percent as purchases of automobiles surged, the U.S. Department of Commerce said today. The increase in spending was the largest in two years, MarketWatch reported. The increase in spending hit the savings rate, which fell to 5 percent from 5.5 percent in June. Disposable income, when adjusted for inflation, fell 0.1 percent, marking the first decline in 10 months, MarketWatch said. Inflation rose 0.4 percent, based on the latest reading from the personal consumption expenditure price index.