December is an excellent time to purchase a vehicle. Dealerships need to get rid of the inventory and affects the number of units sold for the year. By the time of late December, the car will already be out for 6 months (R/T) and the first on the block folks have already purchased, so hopefully the demand will be still fairly good for the DODGE boys but steady. However if the production is still somewhat slow and a big demand, then the car could still fetch a bit more than what some folks (me) want to pay. Another variable is fuel prices. If oil goes to 125 to 150, all bets are off regarding price and the general public demand for the Challenger.