For $1, you can add more muscle to Dodge’s newest muscle car

DETROIT — If you want a car with 840 horsepower that can go from zero to 60 in 2.3 seconds, it’ll cost you $84,995. Plus another dollar. That’s the starting price for the Dodge Challenger SRT Demon, which Fiat Chrysler says is the most powerful production car ever. The Demon comes standard with a mere