I need to inflate near flat tires for four bikes. This looks already laborious, so I started to think about CO2 cartridges I have seen in the bike shop. While looks somewhat expensive, would be OK if more than one tire could be inflated with the same cartridge.
Can a single cartridge be used to inflate more than one tire, assuming that all bikes are standing nearby? How many regular (road, not racing) tires could it inflate from close to flat condition?