A few months ago, I ran across some movie clips of low speed rear end
crashes on several midsize sedans.

Of the 6-8 tests I saw, 2 or 3 had minimal damage, including the
Sonata. IIRC, the Sonata appeared to bounce off, with no visible
damage from the viewing angle. Some of the sedans' rear ends appeared
to explode, and cost $1000's to fix.
-

Bob