Here's what I have done the few times I have been forced to wash a car in the evening. First, I have a small propane heater in my garage, I start that baby up and close the garage. While the garage is heating up, I do a quick wash in the driveway and immediately pull the car into the garage upon finishing. With the garage doors closed again, the heater provides just enough heat that it makes it alot easier. I alos use soft towels that have been running in the dryer to get some warmth on them. I alternate between towels that are warm. This usually isn't a perfect dry and I go back over it with a MF and some Wipe & Shine. I hate doing it at night, but if I absolutely have to I use this method. By the time you are done drying, the garage is warm enough to allow waxing or anything else you need to do.
On a side note, why is it that 7 out of 10 times I have to hit the post reply repeatedly until the posting windo shows up?