The idea that Silicon Valley could reinvent the auto sector the way Apple reinvented mobile phones is an appealing one, and by some metrics Tesla has done just that. The Silicon Valley automaker's distinctive product features — blistering performance, long-range batteries and slick touchscreen interfaces — have beguiled legions of fans and investors, giving the impression that the future of the auto industry had suddenly arrived.

But recent reports call that glowing future into question. After 15 years, it's increasingly clear that Tesla has nothing to offer in the area that, as the tech analyst Horace Dediu puts it, is where "almost all meaningful innovation occurs": the production system.

Throughout its history, Tesla has been plagued by poor manufacturing quality and missed production deadlines. And now, CNBC's Lora Kolodny has the scoop on Tesla operations tasked with "reworking" and "remanufacturing" poor quality cars and parts, illustrating a deeper problem than the poor quality itself. By reworking vehicles after they come off the line at its Fremont, California, assembly plant at a dedicated remanufacturing facility in nearby Lathrop — and even reportedly in its service centers — Tesla is taking automotive manufacturing back to the dark ages.