Honda Motor (HMC - Get Report) shares were surging as its first-quarter profit exceeded estimates. The Tokyo-based automaker reported earnings which surpassed analysts' expectations. Sales also beat forecasts. Profit for the quarter was driven by the demand increase in U.S. and China, its two biggest markets. The automaker reiterated its full-year profit forecast. Honda's quarterly results come as it and other automakers, including Ford and General Motors release sales results for July.