Mercedes S500 Plug-In Hybrid Rated At 78 MPG

While the green car movement may have started as a way to lessen or eliminate the use of fossil fuels, green is in vogue with the wealthy and elite. Few cars say “I have too much money” as the Mercedes S-Class, and its latest variant, the S500 Plug-In Hybrid. Able to return up to 78 mpg with a combined output of more than 400-horsepower, what’s not to love?

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