The closest that I can think of (and it's not really close) is Photoshop-Extended for 3D work.However, it is more a 3D "painting" program (at that level, as it does so much more, but not with 3D), and not a 3D modeling program.
As for AutoCad, I can think of nothing.
Still, I would post your question to the Creative Suites Forum, and see if others are aware of programs, in the Adobe lineup, that come closer to what you want.
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