Generate a concept art piece in the style of Weta Workshop, featuring Gandalf riding a yellow mech, inspired by Love Death & Robots and Lord of the Rings game design. Incorporate a cybertruck element, as seen in the work of Pete Morhbacher. Create a full-body, detailed piece with a glowing aura, utilizing global illumination and ray tracing in Unreal Engine 5. Output should be in anamorphic widescreen format, reminiscent of 2077.