i feel what you are going thru. I am also in the same boat, scrambling all the last money i can get my hands on. i usually get 42 or 43 hours if i stick to my actual set hours. Since Dec 09 ive been getting 55 hours or more. I have been pushing myself with the same saying which is so funny bc im driving people nuts at work: Eye on the prize!

Usually get 5 hrs a night of sleep, and since mid Jan. til now ive been getting over 60 hrs a week. A couple weeks ago i did a desperate move and i actually collected on one of my two week paid vacations that i have and still worked 62 hrs that week. 40 vacation, 40 working, and 22 overtime all together. Today barely still being sat 2/20 i ended my week (tues-sat) and got 66 hrs!!! I want this car more than anything and i am pretty much willing to do whatever it takes til it gets here.
I quote one of my co workers 2 weeks ago in saying, " I open up this sat. so you can sleep in." I reply, " work now, sleep after i get the car, not before"

Now after posting this ill be crashing for the next 2 days. I take delivery in roughly 2 weeks.