I just looked at my save data for my PS3.. there are a lot of HD + Fury save things on there. I had like 2GBs which I ended up using almost 1GB for this and little big planet... now im down to less then a GB left for memory cause of this im pretty sure.
I think ill need to end up buying that new hard drive sooner then I wanted to. :S
---your about to see a real super saiyan and im not talking about Goku--- Future Trunks
The game makes one save for your profile and dozens of individual saves for ghost ships, on time trials and speed laps. There's no way it's taking up a GB on your hard drive, but it is sorta annoying. You should be able to delete the ghost ships without losing anything, but it would be a hassle to go through them all one-by-one.