Proposed Third "High Speed" variant, only progressed to wind tunnel model stage. This was the last and the pinnacle of the Me-262 aerodynamical possibility, which would have been built from the ground up as a new Me-262 instead of modifying older ones. In the Me-262 HG-III, its wings were swept at 45 degrees, it also had the aforementioned "racing" style cockpit, however, the largest change was the moving of the engine nacelles right into the fuselage side and changing the engines to the more powerful Heinkel HeS 011 engines.

(The schematic is for the landed version, if you want the in-flight versoíon replace the landing gear with a smooth quartz slab)