With lower gas prices out there these days, suddenly the prospect of owning a sport utility vehicle is even more appealing. Just in time to take advantage of this favorable economic development, a raft of all-new and refreshed models is coming on-stream for the 2015 model year. BMW is offering the most powerful version of its X5 and X6 to date, while Land Rover has a new Range Rover Sport model with the distinction of holding the SUV track record on the 13-mile Nordschleife circuit at the Nürburgring. Cadillac and Lincoln both have new iterations of America’s most luxurious full-size SUVs to consider, and the all-new Jeep Renegade brings the attributes we’ve come to love about that venerable brand to bear in a very compact package. Meanwhile, Ford’s Explorer, said to have ignited American’s passions for the SUV in the first place, comes to market with a completely new strategy.