Which company will benefit most if government starts to convert their vehicles to electric?

Been hearing in the news about local cities converting things like school buses to electric. For example here is a clip about New York school buses:

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According to the World Resources Institute, New York is getting the first fleet of electric school buses. Factored into New York’s annual State Budget, the zero-emissions fleet will be in the books by 2027. “The budget will enact a nation-leading commitment for New York to achieve the first fully zero-emission statewide school bus fleet in the country.”

The state hopes to have all new bus purchases be electric and have zero emissions by 2027. By 2035, New York wants all buses in operation to be electric. The plan hopes to be able to use $500 million from the budget toward school bus electrification. The New York State Energy Research and Development Authority will help the school districts finalize a plan and provide support as needed.

source: https://www.motorbiscuit.com/new-york-getting-electric-school-buses-diesel-buses-out/

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Then of course there is the potential for USPS to completely convert to electrical vehicle and potentially many other federal vehicles.

So the question is, when the times come which company is in a good position to benefit from this?