I accidentally hit c with a card selected and archived the card. I tried to undo the archive but couldn't find the option. I tried moving the card back to the list but that didn't seem to work.


Question: Is there a way to fill your tires with nitrogen?
Answer: I can inflate my car tires to proper pressure by checking them once a month or so and inflating them as needed using free air.  It takes me maybe 5 minutes per month.

I can inflate my bike tires to proper pressure by checking them once a week or so and inflating them as needed using free air.  It takes me maybe 2 minutes per week.

There is no strategy of using alternative gasses that can even remotely compete with that in terms of economy, time or convenience.