So now that there's been many widespread reports of the frequent lost power/pull over now that seem to be tied to P85D's in range mode on .167, and service centers seem to be swamped with affected cars (also no loaner vehicles available) and tesla seems to have confirmed the fault exists given their responses to owners inquiries ... now the question remains what is the real problem? I think it's a valid assumption that this is all due to a flaw in the new torque sleep. If I recall I think .167 had some new torque sleep features (given the pics someone posted somewhere about how range mode on enables torque sleep). They probably tried to rush this out too fast since it was a hot topic and in high demand. However, the big question that remains for me is whether or not the flaw is in the software and can be corrected, or is it a more serious hardware design flaw in that the front motor that it's just not up to the task. Or perhaps something like once power is cut to the rear there are issues restarting it. Who knows. Are there any S85D's experiencing this or just P85D's? I think it's entirely possible that Tesla pushed this out way to quickly and didn't long term soak test torque sleep and that the front motor itself might not actually be able to handle the power required or its being overheated or something like that. If it's really the case then I would think there's two solutions: either torque sleep goes away permanently or Tesla's going to have a major recall to put more powerful motors up front or fix whatever hardware/electrical/chips may be faulty. Or maybe none of the above and it's really just firmware related and bad programming by their engineers. In any case, I'm very disappointed in the recent software bugs introduced in 6.1.xxx. Brakes, steering, and power safety failures disabling the vehicle. It's alarming and concerning knowing they can screw up critical systems overnight by pushing faulty software to the vehicles. They are accountable for these. I fear the possibility of them accidentally bricking the entire fleet by pushing out their software too fast or of course worse, critical systems failing while in motion. They really need to improve their software process to prevent any of these issues in the future. I'm still just utterly shocked these kinds of bugs made it to customers across the fleet. I know this is new territory for all (continuous software updates in auto) , but there's really no room for error here. Unfortunately it doesn't seem that Tesla understands this yet. I know we are all excited here about the car but everyone needs to take a step back here and recognize that human life is involved here and careful steps need to be taken to ensure all of the above never happens again on any future release. I'm reading reports of cars shutting down on busy highways with no room to pull over and stop. This is seriously dangerous. God forbid something horrible happens as a result of a software flaw from an immature or lack of good software processes by Tesla. Also, I hope that EVERYBODY who experienced this reports these incidents to be NHSTA. That is exactly why they exist.