"I could see this applying really well to a topper. It would be awesome for the truck camping crowd to have cleaner solution to roof rack mounted solar panels"

"It's an exciting idea; however, I'm not sure how much of an issue it solves, though. I think this is mostly relevant for people that don't ride their bikes often and subsequently deal with corrosion more than actual wear from use on a drive train. The main objective when lubing a chain is to get lube down to the rollers inside the chain to prevent wear. I don't know if the disc applies enough liquid for it to flow into place. Also, when you use enough lubricant to a chain, you will need to wipe it down. Otherwise, you make it attract dirt and other abrasives that wear out your chain even quicker. "