Smooth as silk, smooth as a baby’s behind, smooth as satin, smooth as glass, smooth as a pool table, smooth as an iPad screen, or even smooth as a breeze, but slick as a whistle. That’s the Lexus LS ...

Luxury doesn't just mean leather seats and real wood on the dashboard these days, with high-end models falling over themselves to add every bell and whistle possible. Amid the vast screens and ...