PWC as a unit of measure

Heh.  Glenn Reynolds's comment is:

AMERICANS WILL USE ANY UNIT OF MEASURE TO AVOID THE METRIC SYSTEM.

The headline to which he is responding is:

Corgi-sized meteor as heavy as 4 baby elephants hit Texas - NASA by Aaron Reich.

The subheading is The meteor in question struck the Earth near McAllen, Texas with the energy equivalent of 8 tons of TNT, but there were no reported casualties or damages.

The first paragraph is oddly specific.

A meteor around the size of a Pembroke Welsh Corgi and weighing around the total weight of four baby elephants struck the Earth near McAllen, Texas last Wednesday, NASA confirmed this week.

I cannot imagine it being useful but I am delighted at the idea of PWC as a unit of  measure.  One Pembroke Welsh Corgi.