Had a quick practise on my wife's car today before using it on my Golf.
Someone brushed her bumper a couple of weeks ago so I thought I'd try out the new toy.
Started with this

Took a few nervous minutes to get this..

Looks like there's still a scratch there but it must be a reflection of something.
I'm pretty impressed with the results, and also managed to tackle the area around the door handle that looked as though a bear had been trying to claw its way into the car...

Unfortunately it pissed down so forgot to take an after picture, but managed to get all but 1 of the scratches out. Given I only had about 10 minutes on it, think that's quite good.