Germans Say The Darndest Things

I admit to being very naughty taking this picture.  (I wonder if there are laws against photography while driving?)

Well, you can't really read the back of the van in front of me, but it says Krankenfahrt.

Krankenfahrt?  What's a krankenfahrt?  Well, a krankenhaus is a hospital.  The word kranken means sick or suffer.  Haus means what it sounds like - house (hmmm - sick house).  The Germans get right to the point.  They tell it like it is, so what is a krankenfahrt?

Is it just me, or is this word funny? (at least to an English speaker?)  OK I google translated it.  In its literal form it is "sick ride."  A ride for the sick (or suffering).  How will I ever take German seriously?