I'm sure the clips are being reviewed by the authorities as we speak. On top of that, the store's CCTVs (if any), and TV Cameras mounted along various express ways might help in nailing the culprits.
All said and done, and not belittling the seriousness of the offense or condoning it, I must say the content of the vandalism ("Special My A**") got me laughing a little. Probably prompted by something like:
Some kids: This Mini how much ah?
Sales guy: $120k+++++
Some kids: Wahhhh, how come so ex???
Sales guy: This car is a special car meant for special ppl (and walks away)
Once again, I'm in no way condoning this act of vandalism.