I passed on buying a Demon, which wasn't that much more than the pedestrian '18 Challenger I bought, for two reasons.
Yes, they are slow. If I remember correctly the top speed is 140 mph or something. Maybe more importantly, I really didn't care for the dually fenders.
Of course, it also wouldn't have made much sense for me to buy a car that's made to be quick in a straight line when my driving consists mainly of going fast on twisty roads.