Are Tesla’s electric semi trucks really capable of sprinting from 0 to 60 mph in just five seconds on their own and 20 seconds with a full load behind them? Better yet, can these trucks really hit a top speed of 65 mph while going up a five-percent grade? Since we’re already asking these questions, do these trucks really have the range to travel up to 500 miles? All these numbers were presented by Tesla during the electric truck’s unveiling last month. Almost all of them are mind-blowing by industry standards so, naturally, the specs came with plenty of skepticism. Are these specs real or fabricated? Well, according to Electrek, a transporter that participated in the Tesla Semi test program confirmed that the specs are, in fact, real — or at least most of them are.