Doubt it. You don't have a job. You don't have any credit history to speak of and if you are joining the military there's no way of knowing where you'll be. Some of the car dealers may be able to offer financing but you'll end up with such a clunker you won't be able to afford to keep it up...
Since you acknowledge that your approach doesn't work why not change? Try reviewing your material daily. When you get to exam time then you will be able to go over the stuff that is more difficult since you have already reviewed the other stuff. The other issue may be that you don't take...