I cant say anything other than its heavy to be honest. Obviously when moving at speed its lighter but that obviously due to the movement.
It possibly feel slightly heavier than a manual rack, but that might just be down the wheels as the only manual rack car I can try is a Semi-Rally prepped corsa so its light anyway with small stock wheels on, so to be honest it's not a fair test.
Are there any tests to find out either at a stand still or moving to work out if it's either? Or is it a case of getting both?