South Korea\'s full-size car sales surged in the first half of this year thanks to the popularity of the fifth-generation Grandeur sedan made by top automaker Hyundai Motor Co., industry data showed Monday. Domestic sales of full or large luxury sedans jumped 39.6 percent on-year to 112,927 units in the January-June period. The increase far outstrips overall car sales in the country that grew 4.1 percent to 739,144 units in the cited period.