GMC released a new video teasing its upcoming, 1,000-horsepower Hummer EV  and, thankfully, it grants us our clearest look yet at the much-hyped,  all-electric truck. Narrated by three-time NBA champion Lebron James,  the minute-long clip not only gives us a glimpse of the Hummer's  development—including shots of a scaled-down clay model, a life-size dev  mule, and what looks like the Hummer's huge, flat battery being carted  around by lab coat-wearing GM peeps—but also confirms a handful of  features that have all seemingly been given very Tesla-esque, social  media-friendly names.