Also - I don't see any airbags deployed.
Maybe something pushed it over at a low speed. - looks like the driver's wing was hit - car started sliding - nearside wheel hit a kerb and the suspension collapsed, car rotated on this kerb and rolled over. Hence, wing damage from initial impact and missing bumper from being crushed against whatever was pushing it as it rotated.
Oh yes, and there was some convinential placed bushes on planted just behind this kerb to protect the side panels from damage, although they did manage to knock a wing mirror off - think of the end of a row of spaces in a car park...
This would also explain why the side with the broken wing mirror is full height, while the side form which it's being pushed has collapsed - think of the momentum as it tips onto its roof.
Oh yes, and it;s silver so you can't see the scratches from the bushes...
All, IMO, of course...
Deek
(Pretending to be Sherlock Holmes...)