Hyundai Motor, whose sedan-heavy lineup has held it back in a U.S. market powered by sport utility vehicles, is considering developing larger SUVs based on its Genesis luxury sedan, four people familiar with the matter told Reuters. There is no certainty Hyundai will bring the new vehicle to market, one of the people said, given concerns about its lack of brand power in the higher-priced SUV segment, and whether oil prices could surge again and erode the market for gas-guzzlers.