Still, spanners get thrown into the works sometimes. And things don't work when they should as Volvo recently found out.
According to a Wired.com report and video, Volvo held a media demonstration of their new collision system warning in Sweden.
A new Volvo S60 was "fired out of Volvo's testing tunnel at around 30mph (48kmh)," the Wired report said.
The new collision warning system then kicked in, bringing the car to a stop before a truck parked in its path.
That was what should have happened.
Instead, the car smashed into the back of the truck right in front of global media.
Volvo said there was a human error in the preparation of the crash, the report stated.
Said the report: "Volvo later claimed...that had a human been driving, he or she would have noticed the system was not operating correctly. The technical reason for the fail concerned a problem with the car's battery."
To be fair, the report added, the collision warning system was seen working perfectly in the day.