u/BuildingDread

My plant identifier app keeps telling me it's a Monks Hood/Astrophytum ornatum, but it doesn't have any of the characteristic white dots. Could it be an f. nuda/var. glabrescens? I think it also looks similar to certain species of Parodia, Melocactus, or Gymnocalycium. I think I picked it up at a hardware store two or three years ago but I'm not sure. It's had very little growth except for two new areoles at the top that have sprung up this summer, and it's never flowered. Not really relevant because it's an indoors plant, but to fulfill the sub rules it's in the midwest US

Edit: formatting fix

My car (2010 Sonata) has been pulling left for a little bit so I finally got out to check the tire pressures manually (the warning light on the dash has not been on though) and discovered that the front right tire valve has disappeared. Rear tire for comparison. No idea where the valve is, except I assume behind the rim somewhere or fallen out, but there's no hole in the tire where it should be. The tire is about 2 years old and I know it was there a few months ago. The tire isn't obviously flat and as noted above the car is pulling the opposite direction from expected for a low/flat. How much of an issue is this (like, stop driving immediately vs get it fixed next time it's in the shop), and is it a quick self-repair or does it need to go in to a shop?