If you thought high gas prices and a questionable economy meant the era of big SUVs was over, you’d be wrong; 2011 saw large SUV sales in the US grow 3.7% with a 7.4% growth in the luxury SUV segment. If you are one of those people with six-figure salaries and snow-filled school runs, the Cadillac Escalade is probably on your short list. But what about the person who isn’t ready to look “gangsta” while dropping Jimmy Jr. off at softball practice? Infiniti might just have the answer: the all-new, all-enormous QX56. Michael Karesh snagged a QX56 from a dealer back in March 2011, and in December Infiniti tossed me the keys to a 7-seat QX to see what the behemoth is like to live with for a week.