So, my 2008 Smart Passion was just rear-ended.
The road became slippery during a surprise hail-storm, and a large delivery truck slid and rear-ended me at low speed (probably less than 20 mph).
As soon as I download some cellphone pictures I took of the accident, I'll share them. In the meantime, here's my observations:
The back bumper got whacked pretty good. The thin connectors on top of the bumper, near the base of the tail-gate were snapped in half. The tailgate looks a bit out of skew. I haven't yet met with the insurance adjuster, so I have no idea how bad the less-visible damage is (eg. around the engine).
Anyway, I'll post updates to this thread as available. Hopefully it'll be an informative learning experience.