You get a sticker every year showing that the yearly road fee is paid, and that liability insurance is OK.
No, stickers are out now. It's all electronic.
Because of that Redhat lost mindshare and customers (to Canonical, in many cases).
So a move Red Hat did in 2003 made them lose customers to an unproven upstart company with no solution for the enterprise i 2005. Sounds legit.