I WAS CONFIDENT THAT A SPARE TUBE WOULD BE ENOUGH.
Last month, I got a flat on my way to work. I changed the flat one out in a few minutes. I had a hand pump and after what seem like more than a hunders pumps, I was ready. When I took the pump off the valve, the middle part took off into space. I was lucky that a woman came by and let me have a patch kit (tried to pay but she said no way and rode off). I did a quick patch just waiting until the glue was sticky and putting thumb pressure on the patch for a minute: it held. Another stroke of luck came by and inflated my tire with C02. Now I carry a new spare tube, patch kit, and CO2.