If it wasn't clear already, robots are well on their way to making us humans obsolete — witness the latest evidence in the form of all-robot band Compressorhead. The band just released a video of it performing seminal heavy metal band Motörhead's "Ace of Spades," and it's among one of the more vulgar displays of robotic power we've seen in some time. The band may have been together for a few years now, but that doesn't make the spectacle any less entertaining. The sound quality may not be great, but it's pretty clear Compressorhead are a group of virtuosos, though we have yet to hear what any of the three-piece band sounds like when they step behind the mic. Unfortunately, the band's site is currently down — but if you're interested in seeing them in the "flesh," the German metal band will be playing at Australia's Big Day Out festivals later this month.