I'm sorry this has happened to your car. I ran over some road debris and scratched mine. (It may have been my thread you read.) I've been living with it for a year now.
The good thing is that the scratches get less pronounced over time because you just stop seeing them.
In my dreams there is a texturized, pebble finish mold that can be pushed into the plastic panel after you have heated it up and Voila, the finish is back to normal.
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"Frodo" - '07 MCS SS/Blk, PB int, Anthrocite HL, Armrest, Hi-Fi, Sport & Premium Pkg, Sport Susp, LSD, Rear Fog, Alarm, TAGUS, 9/13/07 delivery. MINI-mini mods: shorty antenna, front and rear mud flaps, CF scoop, phone mount, brake light pulsar, glove box organizer, airbag stickers, Team Dynamic 1.2's, catch can