[WONTFIX, dangerous] raw photos and little jpegs

[Franzkekko]

Hi all! I have a 550d camera and I was wondering if it's possible as in other camera to have the possibility of saving my raw with a small jpeg version of the shot. In my camera I can set raw+jpeg buy it's a full resolution 18mpx image. I need them in low res for fast previewing on PC without processing.
May be that possible in future? Should be useful for time lapse footage? :-)
Thanks in advance ;-)