California Governor Passes on Groundbreaking SEMA-Sponsored Zero-Emission Aftermarket Conversion Project

DIAMOND BAR, CA – June 16, 2024 – (Motor Sports NewsWire) – SEMA — the Specialty Equipment Market Association — is deeply disappointed that California’s Senate Bill (SB) 301, legislation aimed at incentivizing the conversion of gas and diesel-powered cars into Zero Emission Vehicles (ZEVs), was vetoed by California Governor Gavin Newsom.

Authored by California Senator Anthony Portantino, SB 301 sought to establish the groundbreaking Zero-Emission Aftermarket Conversion Project (ZACP) under the California Air Resources Board (CARB). Despite being lauded as a “Job Creator” by the California Chamber of Commerce and receiving unanimous support from lawmakers, the bill faced a veto at the Governor’s desk. This program would have provided rebates of up to $4,000 to California residents undertaking the conversion of eligible used vehicles, with stringent guidelines ensuring compliance with safety, range, and affordability criteria.

This missed opportunity is glaring, especially as California boasts several programs promoting new ZEV purchases but lacks support for ZEV conversions of existing gas-powered vehicles. This setback hinders the rollout of a program that bolsters cleaner air, reduces carbon emissions, and fuels job growth and economic prosperity statewide.

California’s reputation as an innovation hub rings hollow with this veto. SB301 was poised to be a catalyst for progress. With over 149,000 jobs and a significant $40 billion economic impact, the specialty automotive aftermarket stands as a vital contributor to California’s economy. This bill represented a chance to supercharge the industry, aligning seamlessly with the Governor’s stated priority of advancing cleaner vehicles.

“SEMA is profoundly disappointed by Governor Newsom’s lack of foresight in vetoing SB 301,” said Mike Spagnola, SEMA’s president and CEO. “This legislation would have advanced environmental sustainability and leveled the playing field for aftermarket conversions while fostering innovation, supporting small businesses, and providing consumers with affordable and sustainable transportation options.”

SEMA remains steadfast in its commitment to advocating for policies that promote innovation and sustainability within the automotive industry. While SB 301 may not have secured the Governor’s signature this time, SEMA will continue collaborating with lawmakers, stakeholders, and the community to advance initiatives that drive innovation.

For inquiries or further information, please contact Christian Robinson at

About SEMA

SEMA, the Specialty Equipment Market Association founded in 1963, represents the $51.8 billion specialty-automotive industry. The industry provides appearance, performance, comfort, convenience and technology products for passenger and recreational vehicles. Association resources include market research, legislative advocacy, training and product development support, as well as leading trade shows such as the SEMA Show in Las Vegas, Nev., and the Performance Racing Industry (PRI) Trade Show in Indianapolis, Ind. For more information, visit,, or

Source: Specialty Equipment Market Association 

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