The sport/utility vehicle cuts a broad swathe through the 21st-century automotive landscape. Think of a car genre-sporty, family, budget, luxury, utilitarian, gas-miser -- and you'll find its equivalent in today's sport/utility segment. What once was the territory of a handful of off-road specialists is now a lucrative business for everyone from Jeep to Porsche, Kia to Cadillac, offering everything from gutsy rock-crawlers to fuel-sipping hybrids.