If you’ve switched on the motoring news this morning you’ll see it’s dominated by something that’s more used to dominating tarmac than headlines: the Hummer. Not just any Hummer, though, but the upcoming 1,000 horsepower all-electric brute from GMC. Needless to say, people are pretty pumped that the Detroit icon is reviving the Hummer name for the 21st century, but what exactly is there to be excited about?