According to ToysRGus, here are the possible versions of SW in Super8 format:

Video and Film / Super 8
A New Hope
Ken Films
___ SW Super 8 Film--B&W
___ SW Super 8 Film--Color, Silent
___ SW Super 8 Film--Color, Sound 17 Minutes
___ SW Super 8 Film--Color, Sound 17 Minutes, Spanish Language
___ SW Super 8 Film--Color, Sound 4 Minutes
___ SW Super 8 Film--Color, Sound 8 Minutes
___ SW Super 8 Film--Color, Sound 8 Minutes, Spanish Language
Empire Strikes Back
Ken Films
___ ESB Super 8 Film Part 2--Color, Sound 17 Minutes
___ ESB Super 8 Film--Color, Sound 17 Minutes
___ ESB Super 8 Film--Color, Sound 17 Minutes, Spanish Language
___ ESB Super 8 Film--Color, Sound 4 Minutes

More info from: davisdvd.com

http://www.davisdvd.com/images/starwars/sw_super8_2.jpg

A New Hope
Release Format: Super 8
Release Date: 1977
Studio: Ken Films
Comments: These Super 8 reels featured selected scenes from the film
Other Comments: Available in five different versions: B&W/silent, color/silent, color/sound (100' - 4 min), color/sound (200' - 8 min), color/sound (400' - 17 min)

Empire Strikes Back
Release Format: Super 8
Release Date: 1980
Studio: Ken Films
Comments: These Super 8 reels featured selected scenes from the film
Other Comments: Available in four different versions: color/sound (100' - 4 min), color/sound (200' - 8 min), color/sound (400' - 17 min), color/sound (400' - 17 min part 2)

Even a miniDV cam of this thing would be interesting, imho. Would answer the question of how short you can make SW!
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