That's now going to be necessary. It's not hard; my horse vet has a hand-held X-ray machine and a detection plate that connects to a laptop. An electric motor is obvious in X-rays. It would take maybe 5 minutes per bike. You only need to scan the leaders, of course.

Domestiques use other kinds of dope as much, or more than, race leaders. Their job is to burn themselves out in service to their leaders. If you dope up your domestiques, the leader gets an easier ride.

I'm sure all these health conscious road bikers will love being blasted with X-rays. Millimeter waves sound so much more friendly.

you can let them get off the bike before x-raying them...

I don't think pro cyclists are particularly health conscious. They're performance conscious, which is a very different thing.

The government already uses large X-ray scanners to X-ray vehicles with riders in them. The scanner manufacturers insist these X-rays are perfectly safe to use on humans even though they're strong enough to penetrate steel.

Millimeter waves won't penetrate metal, so they probably wouldn't work on bikes.

They'll dismount and give the bike to the x-ray tech, of course. Besides they got a bigger dose in the scanner at the airport.