It’s a good plan, especially with the Civic link you posted. The key is getting something reliable since you have a real job and they expect you to have a real car. Coming in late a few times with the excuse of, “My car broke down again” is not going to cut it there with what I’m guessing they’re paying you.
Aren’t you considering looking for your first house soon (think I remember that from some other thread). If so, getting rid of monthly payments goes a long way toward getting the downpayment/closing costs paid for. If you take what ever you were paying a month and set up your bank to auto-transfer it to your savings, as well as putting away a little extra here and there you’ll be surprised how quickly you build savings.