The Home page says the Mars One Dragon (MOD) "will be slightly larger than the current Dragon." It also says that it will land 2.5 tonnes of payload on the surface of Mars and the first crew will have over 200 cubic m to live in.
What does this mean? The Red Dragon study found that the crewed version of the current Dragon, which masses round three tonnes, could land one tonne on the surface of Mars.
Increasing the payload by a factor of 2.5 is not "slightly larger", it is a significant change. What do SpaceXsay about this? Have they started doing the development work for this? The first lander needs to be ready by 2014, a year before the crewed version of the normal Dragon is supposed to fly.
Increasing the volume of the MOD gives a volume of 25 cubic metres. Accoding to the timeline there will be six pressurisable modules on the surface when the first crew arrives, that is only 150 cubic metres, not over 200. Where will the extra volume come from?
Using ISS logistics each astronaut will need 2.5 tonnes a year of supplies, everuy two years that is 20 tonnes for a crew of four. However the two supply modules on hand for the first crew will only provide 5 tonnes. Where will the extra 15 tonnes come from?