Why waste resources updating a car you didn't design and don't really understand? Sure you could attempt to pick apart Dallara's design and modify it from there, but do you really think it was worth Hispania spending the money to do that?
Lets also keep in mind that it was designed and produced by Dallara originally, HRT didn't/don't have their own windtunnel. They don't really have a proper base as far as I understand, its mostly Kolles' resources being used.
People aren't giving Hispania much credit really. Of course it doesn't look great for them financially at the moment but they have turned up at all the races and although they have been off the pace, they have been reliable and quite organised.
HRT clearly have some money otherwise they wouldn't have turned up at all the races. Whether they will be in F1 in 2011 remains to be seen but its not as gloom and doom as some are suggesting.
I also have to give major 👍 to Colin Kollles for really saving that team and turning it into a somewhat professional and organised team. If it wasn't for him, they wouldn't have made Bahrain.
Also a word on the drivers (and the car): Senna has actually been moderately impressive over the season, almost always being ahead of his teammates and dicing with Virgins on two occasions (Turkey and somewhere else I can't remember right now). Chandhok also did ok, Yamamoto has actually been reliable and Klien was impressive.
The car itself obviously looks dreadful to control but even so, its been reliable. HRT have the most double-finishes out of the new teams. At one point they were more reliable than Sauber!
HRT are certainly not the clowns people like to portray them as. They are not anywhere near the lows of Andrea Moda or that type. They are more like Super Aguri. Although a 4 year-old Arrows is better than a Dallara
.