Wonder if any of these processes actually work of it's a hoax... Anyone even seen this before or even tried it? Still there are quite a few comments that reported success...
http://www.wisebread.com/remove-car-...ly-and-cheaply
I think that you could remove most of the scratches on the door by hand with some mild scratch remover (eg Meguiars Ultimate Compound, ScratchX 2), then finish with a finer finishing polish (eg SwirlX, 205 Ultra Finishing Polish or Meguiars Speed Glaze 80). You'll at least reduce the appearance of the other scratches, but removing deeper scratches completely without a machine buffer will take forever. Then you can touch up whatever deep scratches are left if you choose.
But it's a near-new car, it's worth repairing properly IMHO.
Yes, definitely a good idea to wait a few weeks to allow repaint to cure before re-applying any wax, protectant or sealant.
- HZ