A program with LA Metro that rewards low-mileage households for keeping their cars parked. Live across LA County since 28 September 2026. Verified miles, weekly rewards, all-digital settlement.
LA Metro's One Car Challenge pays participating households a weekly reward for keeping their vehicle's mileage below a defined threshold. Carma verifies the miles each week through the connected-car API or an AI-reviewed odometer photo, calculates eligibility, and settles the reward to a virtual card the participant can use immediately.
U.S. metros have spent decades adding lanes, building rail, and writing TDM plans to reduce drive-alone trips. The One Car Challenge is the first program to put a clear, weekly dollar price on not driving — verified by phone, paid the same day, no paperwork. That's the policy lever transportation planners have been asking for.
The Los Angeles County Metropolitan Transportation Authority — operator of the largest transit system on the U.S. West Coast and the lead transportation authority for a county of nearly 10 million people. The One Car Challenge is the most ambitious mileage-reward program in U.S. transportation today.
Any mileage-reward program is only as credible as its verification. Self-report doesn't scale; OBD dongles are expensive and unpopular; cabin cameras are non-starters on privacy. Carma reads the odometer through connected-car APIs or an AI-reviewed photo, delivers privacy-by-design, and settles to a virtual card the same week the miles are driven. That's the architecture the program needs to grow.
Three views from the live One Car Challenge participant app — registered vehicles + maximum-earnings tracker, daily mileage, and the reward summary.
