Both HRT & Marusia remind me of those teams came and went in the late 80s early 90s with no one really noticing that they'd been there.
The on the HRT the only visible change apart from the livery which is the biggest change is a very slight change to the undercut of the side pods ad an equally small change to the nonecone apart from that it's still essentially the 2010 Dallara. No wonder why they had such trouble passing crash tests the car was basically designed around three year old tests.
The Marusia on very first glance also looks the same, closer observation reveals slight changes to the roll-hoop/air intake and he side pods. Perhaps the biggest change is the monocoque itself, visibly lower cockpit so it's definitely new. Still.. Very early 90s small team style of preparedness though. It's a shame because CFD gimmick aside this team looked exciting ahead of it's debut in 2010 but it's steadily looked more puzzling with each passing race. If they finish behind HRT again it'll truly be a shambles and at this stage there's a big chance of that happening.. A new car with zilch testing could have all manner of reliability problems.. since the HRT is basically the very same car you might expect it to prove ultimately more reliable and be more likely to pick up the freak attrition race result.