Hyundai, Kia, and Genesis all posted record July sales, driven by increased interest in hybrids and big gains among the brands' remaining sedans.Hyundai's big winner was the Elantra, which was up 39 percent year-over-year in July to 17,115 units.Kia saw a surge for the redesigned Seltos, which was up 79 percent to 8807 units.