9. Dodge Challenger Demon
If for any reason, the 707 HP from the Hellcat package is not enough and you want the most powerful street Hemi engine ever, the Demon package may be the best option for you. With standard fuel, it will deliver an insane 808 HP, but if you use the high octane stuff, it will pump out almost 840 HP.
Its acceleration from 0 to 60 is less than three seconds, and under full power, the Demon will accelerate with 1.8 G force. That is faster than jumping off a cliff. This car is capable of covering a quarter-mile sprint in less than 10 seconds straight from the dealership (via CNet).