I’m going to go out on a limb and guess that you are American. If you have quick release wheels and a new tube (rather than patching the old) you can literally

I’m going to go out on a limb and guess that you are American. If you have quick release wheels and a new tube (rather than patching the old) you can literally replace a tube in 4 minutes. I’ve timed it. If your bike is your main form of transport and you can’t change tubes, you need to have two bikes. Unless you live next to a 24 hour bike shop...