Thanks for the last comments guys,
Arfon, thank you for your concern about the splinters in my butt, right, it could have been embarrassing... and pretty painful
Albertas, I didn't know you could speak French!
Car is back on stands again, one of the wheels has a manufacturing default : leaking big time, a problem in the cast aluminium (looks like small bubbles). So pissed-off
I hope they are going to change it at no cost... we'll see.