Distance units

Here is how long distances should be measured:

The problem is that a triciatandem is too short, but a quadciatandem is too long.

The solution is to use quadciatandems with one dozenal place

Doing this, it is actually pretty easy to estimate conversions from previous units, because:

1 km ≈ 0;2 qt (quadciatandem)
1 mi  ≈ 0;3 qt

People will round to the nearest 0;2 or 0;3 quadciatandems depending on the previous system.

However, speed limits should probably be in triciatandems per hour, because making it higher would reduce speeding.