We’re really digging the gritty post-apocalyptical aesthetic McG is bringing to Terminator Salvation, but we’re not so sure about the motorcycle-based Terminators revealed in the film’s concept sketches. Allegedly, they’re dispatched by Skynet to collect humans, but we can’t really see how a motorcycle would be capable of doing that. Worse, is the seeming lack of understanding of how bikes work. The concept sketches show side-mounted mini guns that “rotate to act as counter-balance as bike leans” sort of like hanging off in the wrong direction. I know that sounds nitpicky, but unrealistic physics can ruin bike sequences for us in films. Remember the Batpod? The official trailer follows the jump.