I dont totally agree here Justin, with fb the aim is to generate 'organic reach' which is basically free advertising. If an 18 year old gets a nice car in his feed he/she will likely comment or 'like' the advert which will in turn appear in all their friends feeds too, ie organic reach.
I think targetting youngsters with expensive exotic cars is clever for the reason mentioned above. Kids will engage in it, a bit like having a poster on the wall as a kid! They do this stuff on their phones now.
Not that I sell exotic cars like this, far from it actually lol. I just see the method in the madness!