Yes, you can tow a car with a flat tire, as it’s often a safer option to call a tow truck than to try and repair the tire on the side of the road, even if you know what you’re doing.
Dealing with a punctured tire is no fun. We could suggest repairing the tire yourself if you have a tire repair kit, but since you’re in an abandoned junkyard, we here at Jerry are going to suggest you go ahead and call that tow truck. You never know, the tow truck driver might be able to fix the flat themselves—no, they’re fine, they don’t need your help—or they’ll be able to tow your vehicle to a repair shop to get the tire fixed or replaced.
So yes, you can tow a car with a flat tire. But we highly recommend that you stop doing doughnuts again in abandoned junkyards—for your own safety, of course.