Autoworkers in the US have been on strike against the Big Three carmakers for two weeks. They say negotiations have failed to make "meaningful progress." So on Friday, they decided to expand their walkouts once again.

The workers at Ford, General Motors and Chrysler's parent company, Stellantis, are striking together for the first time in their history. They are demanding higher pay and benefits.

Last week, the United Auto Workers union expanded the strike to include workers at dozens of plants and other facilities. However, they still have not been able to reach a deal.

UAW President Shawn Fain said, "What we win at the bargaining table depends on the power we build on the jobs. It's time to use that power."

Fain said he is adding 7,000 union members to the strike, bringing the total to 25,000. He also said negotiations with Stellantis are making progress, so he spared the company further walkouts.

The auto executives say they are willing to make a deal and are expressing frustration with the slow pace of talks.

Ford President and CEO Jim Farley said their supply base is already on a "knife's edge."

He added, "UAW needs a healthy Ford, General Motors and Stellantis to have a future. It's going to take compromise. It's going to take leadership to meet this moment."

Officials at GM denounced the call to expand the strikes. They said the walkouts will not lead to progress and that union leaders are just looking to make "headlines."