so testing round the ring in a maserati hen the car sinks into the ground and stays there.
its an interesting bug and not something i have been able to replicate since.
what happened was i clipped he apex, put it on 2 wheels and the car sunk into the tarmac as you can see, the wheels where travelling at 213mph according to tel (only doing 40mph over the kerb)
was kind of funny though so i thought id post the abrupt end to my test session haha.
I had this happened to me once as well also on the ring… after the bridge towards the beginning (2nd fastest part of the track) anyways I dint make the left hand kink turn and crashed, flipped and got stuck… only happened once tho. dint think much about it so I dint take pics 
The 'ring has a taste for Italian… Nom nom nom.
Sorry I had to. But that is an interesting glitch.
This… has… never… happened… to… me…
In Horizon though, it happens everytime I play…
ummmm… interesting bug…
yeah its not happened since either 
i clipped the curb and the car sunk, rolled and ended up like that … still quite funny haha.