Self - Driving car by google

Google's self-driving car program has now driven its test vehicles more than 2 million miles, the company said on Wednesday.
The company said that the vehicles had covered the distance, while running in fully autonomous mode, in 16 months. Its fleet, which has grown over time, took six years to drive its first million miles.
"What takes a self-driving car from concept, to demonstration, and finally to reality is this accumulated experience," said Dmitri Dolgov, a top engineer for the company's self-driving project, in a Medium post . "Even in the early days of our project, it didn't take long before we could give a good demo ride in our self-driving car.
"But to create a truly self-driving car that can do all the driving, we knew we'd need experience in more challenging and interesting situations."
Dolgov also said that the vehicles had become better at "reliably predicting the trajectory, speed, and intention of other road users" and dealing with rare incidents, like a horseback rider in the street ahead.

The company's announcement comes after Uber started testing its own autonomous vehicles on the streets of Pittsburgh. It's the first test of autonomous cars that includes passengers, who are randomly matched with the cars via the company's smartphone application.
Google, meanwhile, has taken a more measured approach to testing it's vehicles. While it currently deploys them in cities around the country - chosen in part because they represent different types of environmental conditions - it only does so with test drivers behind the wheel.
How it drives

Like any driver, a self-driving car needs to constantly answer these questions.
Where am I?
The car processes both map and sensor information to determine where it is in the world. Our car knows what street it's on and which lane it's in.
What’s around me?
Sensors help detect objects all around us. The software classifies objects based on their size, shape and movement pattern. It detects a cyclist and a pedestrian in this case.
What will happen next?

The software predicts what all the objects around us might do next. It predicts that the cyclist will ride by and the pedestrian will cross the street.
What should I do?

The software then chooses a safe speed and trajectory for the car. Our car nudges away from the cyclist, then slows down to yield to the pedestrian.
What’s in a self-driving car
Our self-driving prototypes rely on their sensors and software to drive themselves.
We’re working toward vehicles that take you where you want to go at the push of a button. We started by adding components to existing cars like our Lexus SUVs, then began designing a new prototype from the ground up to better explore what should go into a fully self-driving vehicle. We removed the steering wheel and pedals, and instead designed a prototype that lets the software and sensors handle the driving.