We’ve all been there: You want to go green, but you also want to keep rollin’ the streets in the biggest, blingiest vehicle possible. What’s an eco-minded luxury-SUV driver to do? Well, stress no more: The 2009 Cadillac Escalade Hybrid, billed as the first luxury hybrid SUV, will hit showrooms later this month. The hybrid version of the Escalade gets 50 percent better fuel economy in city driving than its non-hybrid counterpart, bringing it up to a whoppingly unimpressive 20 miles per gallon. It’ll put you back a bling-tastic $71,685 — about $3,600 more than the regular Escalade and $18,390 more than the Chevy Tahoe Hybrid. Worth noting: Sales of the old-school Escalade have fallen 29 percent so far this year, consumers have largely been shunning other hefty hybrids, and even Shaquille O’Neal fits in a Smart car. Just sayin’.