Tesla will begin priming the car-hungry public for its next electric offering, still set for a mid-2012 launch. The Model S will be given an extensive deconstruction in Tesla showrooms, touring around both the US and Europe over the next few months. The socket-friendly sedan will show off its electrical internals, including what the manufacturer says is the most energy dense battery in the industry, apparently capable of squeezing up to 300 miles from a single charge. We're also promised interactive touchscreen interfaces dotted around the stores to help explain preci