I'm in the same boat... I majorly screwed up my withholdings last year by counting them as physical persons (doesn't make much sense to me any other way).. and with the bigger house with MUCH more tax and interest to write off, I ended up overpaying to the tune of $4800 :o

Tho tempting to blow it all (perhaps literally ) on the car, I know I'm going to have some more house expenses down the road and would like to be able to spend a bit more on it instead of the car. Big problem there is that my wife was thinking the same thing.. but decided on the house as well!

So I opted out for just a quarter of it on the car... and if the house stuff goes better than expected.. then perhaps I'll buy a few more things for the car.