LAS VEGAS — In many ways, Las Vegas was the perfect setting for the first drive of Volvo’s “60 Series” (XC60, V60, S60) vehicles. The weather was nearly 70 degrees (Fahrenheit) warmer than Detroit, which — like much of the mid-section of the country — was in the grips of the “Polar Vortex” that kept temps in the single digits. Visitors wandered about looking for entertainment and big returns on their bets. And underneath all of the glitter, something was missing.