The worst day for my car so far is easily the first day I got it. I bought it used and the PO painted the antennae, grill and lowers silver on a windsor blue car uke: He cut the lower grill to install non functional ugly org fog lights and a host of other attrocoties.
Man I feel your pain, my previous car they smashed the window to steal the subs out of my trunk. They jacked up my trunk by cutting the lock out before smashing the window because they still couldn't get in through the trunk.
T-boned some asshat in an early-90's Olds Whatevermobile. He denied that I had ROW ...even though witnesses said that when I entered the intersection is was still green. Went to arbitration. We won. He still denies it (probably because his cut-rate insurance will drop his ass if they have to pay out). Goes to trial Jan 2009.
Did I mention that I'd had the car for five weeks at that point?