Samsung is increasing its focus on the connected car after the Korean firm announced plans to buy auto and audio product maker Harman in an all cash deal worth $8 billion.You may best associate the name with audio equipment, but Harman is big on cars, too. The acquisition is Samsung’s largest to date and a big deal for its automotive ambitions. Around 65 percent of Harman’s sales — which totaled $7 billion over the last year — were for car-related products. Samsung added that Harman products, which included connected car devices and audio systems, are installed in an estimated 30 million vehicles worldwide…