May Mobility Plans $1.4 Billion SPAC Deal to Fund Robotaxi Expansion
May Mobility's $1.4 billion SPAC merger could raise over $300 million for robotaxi expansion, driver removal research and cost cuts as it goes public.
Summary
May Mobility announced September 16, 2026, that it will merge with ACP Holdings Acquisition Corp., a SPAC established by Houston investment manager Atlas Credit Partners. The transaction values May Mobility at $1.4 billion and could raise more than $300 million, including a $120 million private investment in public equity and up to $217 million from ACP Holdings’ trust. SPAC shareholder redemptions could reduce the proceeds. May Mobility says completion would make it the first publicly traded U.S. company focused exclusively on autonomous ride hailing, distinguishing it from Tesla, Rivian, Alphabet’s Waymo, Aurora and Kodiak while testing investor demand for a pure robotaxi business.
Founded in 2017, May Mobility operates autonomous Toyota Siennas through Lyft in Atlanta and in Eden Prairie and Grand Rapids, Minnesota. It generated about $10 million in revenue last year while burning about $93 million, and has delivered more than 550,000 paid rides covering over 1 million miles. Its asset light, partnership first model sells vehicles to fleet partners while retaining remote supervision and software updates, earning fixed or per trip licensing fees. A first Japanese trial recently began, while commercial Uber service in Arlington, Texas, is planned for late 2026 or early 2027. Proceeds will fund research aimed at removing safety drivers, supply chain investments to lower bill of materials costs and new geographic deployments, some scheduled for announcement later in 2026.
Positives
- More than $300 million could fund May Mobility’s research, supply chain investments and geographic expansion.
- Over 550,000 paid autonomous rides have covered more than 1 million miles using May Mobility’s technology.
- A $120 million private investment provides committed financing alongside up to $217 million from ACP Holdings’ trust.
- Commercial Uber service in Arlington, Texas, is planned for late 2026 or early 2027.
- May Mobility’s first Japanese trial extends its autonomous vehicle operations beyond the United States.
- Fixed and per trip licensing fees support an asset light model that leaves vehicle ownership and operation to fleet partners.
Risks & concerns
- About $93 million in annual cash burn sharply exceeds May Mobility’s approximately $10 million in revenue.
- ACP Holdings shareholders can redeem their stock, potentially reducing the merger proceeds below the advertised amount.
- Safety drivers have not yet been removed, making fully driverless operation a continuing research challenge.
- The listing will test uncertain stock market demand for a pure play robotaxi company.
- May Mobility currently operates in only three U.S. locations despite its planned $1.4 billion valuation.