"This also explains Spontaneous Combustion, hence the rule that no time or teleportation travler take anything with him beyond what he went into the rift with."
Hmmm. . .that might explain it--but how does this fit with the explanation in "Terminator" that only organic things can go through the time-travel gate?
Depends on how 'deep' the rift in space-time is, how fast you want to get there to your point of view, and how the rift is generated.