Actually, I thought the issue with automotive is that 48V really isn't enough. My understanding is that actuators want to be operating at much higher voltages

Actually, I thought the issue with automotive is that 48V really isn't enough. My understanding is that actuators want to be operating at much higher voltages and that 100V-ish is the lowest they really want and that modern actuators would much prefer to be up at 200-400V.