I figured I could make it without getting gas
Why would you try not to get gas?
It already had some but maybe not enough for the full trip.
You should not let your car get so low on gas that it could stall. You could get stuck in a dangerous place.
What are the chances?
Pretty high if you know how far you need to go. There are plenty of gas stations all over the place. Unless you are broke you have no excuse.