LAS VEGAS — Most of us travel to Sin City to lose too much money gambling. I, for one, do not. I head to the Las Vegas Motor Speedway, a lovely bit of concrete and blacktop in the Nevada dessert that helps me satisfy my need for speed. In particular, I head for the dragstrip. It’s here that long ago that I pulled a 10.4-second quarter-mile time at 140 mph in a 2022 Ford Mustang Shelby GT500. Officially, the car runs 0-60 mph in 3.3 seconds. It’s so fast, so furious, and so mind-numbingly fun, it doesn’t go quietly into the night. But the 2023 Kia EV6 GT, the car I traveled here to drive, does …