As flooded roads have reopened in Houston after Harvey, it’s still hard to get around: The storm, which killed more than 70 people and damaged or destroyed at least 100,000 homes, also totaled hundreds of thousands of cars in a sprawling city where almost everyone drives. A new program will replace some of those cars with bikes.

“It’s a way for us to put a dent in some of the issues that are going to be facing Houston in the aftermath of the storm,” says Carter Stern, executive director of Houston Bike Share, which is helping coordinate bike donations through a program called Keep Houston Rolling.

After dealing with the most immediate needs–rescuing and sheltering people and providing food and healthcare–transportation is one of the next major challenges for the city.

“I think after the initial shock wears off, there are going to be a lot of people who have been relocated, who lost a vehicle and can’t afford a new one, who work by the hour or need to get around and aren’t going to be able to,” says Stern. “While many of us might be back in our homes or got a new car, there’s going to be a significant portion of the population for whom transportation is going to be a serious problem for a long time.”

An estimated half a million cars, and perhaps as many as a million, were destroyed in the flooding. Car owners have filed more than 160,000 insurance claims so far, which are still being processed. But around 15% of vehicle owners in Texas don’t have insurance (even though it is required by law), and many others lack coverage that includes flood damage. For low-wage workers who were forced to miss work because of the hurricane, and who may also now be homeless, buying a new car may not be an option. In the short term, even for those who have the money to rent a car, rental agencies are struggling to keep up with demand.

During the storm, though several of the bike share stations were out of service, 1,000 bikes were checked out. Others used bikes to deliver food to shelters or to volunteer in places that were inaccessible by car. As Stern watched this happening, he realized that bikes could also help in the aftermath, and began to reach out for support.

Trek and Giant agreed to donate 400 bikes. BikeHouston, a local bike advocacy organization, joined the effort to solicit donations for bikes and bike repair. Rice Bikes, an organization that fixes abandoned bikes for students to use at Rice University, also had a bike drive and donated staff time to repair bikes for the effort. Freewheels, an organization that provides bikes to newly arrived refugees in Houston, did the same.