So the only concrete thing is the 1 year = 1000 LY

But it would make sense for 1 week to be much more than the 20 ly you get by simple dividing, because you'd make fewer pit stops in 1 week than in 1 year. And the distance covered in 1 day would again be much more than the weekly distance divided by seven. And the distance for 1 hour would be more than the daily one divided by 24.
The distance you cover in a second could easily be 4 billion miles... But only in the
first second.
Timo Saloniemi