Any rider caught in a race with a motor should be immediately banned for life. And I'm not so sure that the team shouldn't be sanctioned, too; after all the teammates and mechanics have to know about something like that. It's not just cheating, it's fraud. As usual, the UCI is waffling about their ability to detect it and their authority to confiscate a suspect bike. They could detect the motors if they really wanted to stop them, but that won't happen unless revenues are affected.