<prompt> Human: Background: Salary - 52k contributing 5 to 401kChecking: 7,000Savings: 7,000No credit card debt - whatever I charge for the month, I pay off in full by the due date. Typically 700-1000 per month. My credit score is 770. Student loan: 25,200...5k at 6.5 interest, and the rest at 3-4 interestRent: 600 per monthPhone bill: 50 per monthI have about a 22 mile commute to work one-way, and Im currently driving an old truck. Id like to get a 2015-16 Ford Mustang ecoboost for better gas mileage...and Ive always wanted a mustang. Ford is currently offering 0 interest for 60 months on 2015 models. What do you say, Reddit? Can I afford it?Assistant: How about you just be happy with your old truck instead?Human: I definitely am happy with it and would hate seeing it go, but it just seems inefficient to keep shelling out 25 a week on gas. And I can only keep a 1999 so long.  <response>: At that rate, youre talking about spending the equivalent of twenty years of old truck gas.But you should do what would make you happy, I got no beef with that. 