If a driver gestures to cross and hits the brakes and the brakes don't work it's hard to blame the driver if they didn't design the car. Just saying it might be more of a technical issue and the behaviour probably wasn't normal/expected.
In this situation, the driver is at fault and everyone can sue the manufacturer/mechanic.
Back to Google: they are at fault and responsible for damages, period.
What benefit is there in differentiating a company from an employee authorized to communicate and act on their behalf?