A “sticky” water bottle during a bike race

A cyclist takes bottles from a support car, but doesn't let go immediately each time. While he and the person in the car hold onto the same bottle, the rider gets a small tow.

This technique is known as a "sticky bottle." Handing over water from a team car is permitted, but using the handoff to pull the rider along is grounds for sanctions. In the UCI regulations, the "sticky bottle" is specifically listed among feeding violations. The source does not state who this cyclist is or whether he was penalized for the incidents shown.