A luxury vehicle is something that should be a rolling oasis amidst the desert of daily commuting. Sure, some people will look upon your ride as irrational exuberance, but you earned the right to roll in style. Luxury vehicles – sedans and utilities – in this universe are also at the leading edge of development. Advances in safety, performance and convenience start at this level and trickle down to the hoi polloi. Here’s a snapshot of what’s coming and what automakers’ imaginations have produced, starting with the most recently unveiled.