Uncovering and explaining how our digital world is changing — and changing us.

This story is part of a group of stories called

General Motors will introduce in two years its first car that can communicate with other vehicles to help avoid accidents and ease traffic congestion, Chief Executive Mary Barra said on Sunday.

In the same time frame, GM also will introduce more advanced technology allowing hands-free driving in some cases, she said.

“I’m convinced customers will embrace (vehicle-to-vehicle) and automated driving technologies for one simple reason: They are the answer to everyday problems that people want solved,” she said in a text of a speech delivered at a conference in Detroit.

Auto companies, academics and government agencies globally are working to develop cameras, sensors, radar and other technologies that allow vehicles and surrounding infrastructure like stoplights to alert each other about nearby driving conditions.

The industry is rolling out such features as adaptive cruise control, crash-imminent braking and semi-automated, hands-free driving like GM’s ‘Super Cruise’ feature to make roads safer.

However, GM and other automakers have emphasized that even with hands-free driving, drivers will be responsible and need to maintain attention on the road. Meanwhile, Internet search company Google is working to develop fully autonomous vehicles.

The U.S. Department of Transportation has made developing connected car technologies a high priority, a view shared in Japan and Europe. And when cars can also talk to surrounding infrastructure, the gains will be exponential, Barra said.

However, she said commercializing a fully automated vehicle may take until the next decade.

Congestion causes urban Americans to travel 5.5 billion more hours and purchase an extra 2.9 billion gallons of fuel each year, she said, citing outside data.

In 2016, GM will sell a 2017 model Cadillac CTS sedan equipped with vehicle-to-vehicle technology as a standard feature. However, the car will only communicate with similarly equipped vehicles and it will take time for the industry to introduce the technology broadly, GM officials said before Barra’s speech.

They added that U.S. regulators still need to finalize requirements for these technologies and cyber security protections need to be developed.

Also in 2016, GM will roll out Super Cruise as an option, allowing hands-free highway driving at both highway and stop-and-go speeds, as well as lane following, speed control and braking in a new, unidentified 2017 Cadillac model in a segment where the company does not currently compete.

GM did not disclose either feature’s cost, or timing on offering them on the No. 1 U.S. automaker’s other brands.

GM will introduce the connected CTS sedan and the unnamed Cadillac with the Super Cruise feature in the United States.

In 1956, GM showed the Pontiac Firebird II concept that included a system to work with an electrical wire embedded in the highway to guide the car. Three years later, the rocket-like Cadillac Cyclone concept boasted an autopilot system that steered the car and radar in front nose cones that warned of a collision and automatically applied the brakes.

Barra said the U.S. Congress can help develop vehicle-to-infrastructure communication with funding in the next federal transportation bill.

She also said GM is joining the University of Michigan and the state of Michigan to develop vehicle-to-infrastructure driving corridors on 120 miles of metro Detroit roadways. State officials said Ford is also part of the effort.

(Reporting by Ben Klayman in Detroit; Editing by Paul Simao)