Cadillac’s new Escalade IQ is large, and, well, it can charge. The automaker revealed a new electric version of its massive luxury SUV today at an event in New York City, showing off the IQ’s complete design for the first time since announcing it in May and teasing its backside and tessellated front lights in June. The Escalade IQ will begin production next summer at GM’s Michigan Factory Zero Detroit-Hamtramck Assembly Center — though a delivery timeframe has not yet been announced. Let’s just