>So no alien with technology to build something like that would want to ride at a "bicycle" speed.
I agree with this conclusion and I think it is of natural origin but that conclusion does rest on several assumptions.
1. That its current speed is the speed it was traveling at in the interstellar medium.
2. That some technological civilization would be unwilling to wait 50,000 years.
3. That it is working as intended, it may have been designed to go faster but something went wrong. Perhaps it was never intended to cross interstellar distances at all.
I agree with this conclusion and I think it is of natural origin but that conclusion does rest on several assumptions.
1. That its current speed is the speed it was traveling at in the interstellar medium.
2. That some technological civilization would be unwilling to wait 50,000 years.
3. That it is working as intended, it may have been designed to go faster but something went wrong. Perhaps it was never intended to cross interstellar distances at all.