Reading this thread has convinced me to, after all these years, give these CO2 inflaters a try. I'm ordering the XLAB one posted above. And I'm also ordering a case of CO2 cartridges. But I have a question about the CO2. I read one review that says CO2 is a temporary "get home" inflation because it seeps from the tube/tire more quickly than just plane air does. So, my question is...can you get just plane compressed air (threaded) cartridges? And also...how many CO2 and/or compressed air cartridges are needed to inflat a single road tire?

Dan