Korean auto giant Hyundai and its smaller sibling Kia Motors have seen a significant jump in sales of electric cars during the first three months of this year. br According to Hyundai on Sunday,... the two auto brands sold over 75-thousand eco-friendly models including hybrid and electric vehicles.br That's a 20-percent increase from the same period last year.br Electric vehicles accounted for nearly a third of the sales,... with Q1 figures jumping nearly 160-percent on-year.br Domestic sales grew over fifty percent to just under 5-thousand units,... while in overseas markets,... sales grew three-fold, topping 16-thousand.