Fat bikes were already much more fashionable, but that doesn't have to be the case. YouTuber  "The Q" is breathing new life into the wide-tired bike. Just recently, he gave a fat bike a kind of caterpillar drive on his account, which has almost 14 million subscribers. But there's no end to the playfulness, now it's the turn of fatbike wheels that can roll on slippers instead of tires or caterpillars.