You go down to the local service station and you buy something called tyre pump or tyre weld. It's a type of glue. You just screw the cap onto the valve of the tyre and you pressurise it. And then it sprays in there like a helium not a helium but an oxygen with glue. And then that'll pump your tyre up. And once you start driving it wherever the leak is, it'll stop because the glue will get mixed inside the tyre as you drive.