Images discovered by a member of Rivian Forums show Rivian has filed a patent with the US Patent and Trademark office for a sliding door on a dual-guide-rail. Interestingly enough, the images in the patent show the door on a minivan-style vehicle. Before speculation runs rampant, we want to point out that this patent is one of hundreds filed by the automaker and likely does not allude to a future Rivian minivan. However, it does present a growing niche Rivian would be well suited to fill More…