The Congressional Budget Office reports that the Army’s proposed Ground Combat Vehicle may have to weigh 84 tons to meet its stated requirements:
This would make the GCV heavier than the 64-ton M1A2 Abrams tank and more than twice as heavy as the 33-ton M2A3 Bradley fighting vehicle its replacing.
BAE Systems’ new infographic details the benefits of the hybrid electric drive system they developed for the GCV:
I’m not sure how silent a tracked vehicle can be, even if it is running on batteries, but having an enormous generator attached to a mechanized infantry unit could come in handy.