Scientists in Geneva took some antiprotons out for a spin—a very delicate one—in a truck, in a never-tried-before test drive that has been deemed a success.

If this so-called antimatter had come into contact with actual matter, even for a fraction of an instant, it would have been annihilated in a quick flash of energy. So experts at the European Organization for Nuclear Research, known as CERN, had to be extra careful when they took 92 antiprotons on the road for a short ride on Tuesday.

The antiprotons were suspended in a vacuum inside a specially designed box and held in place by supercooled magnets.

In methodical exercise over about three hours, the nearly 1,000-kilogram (2,200-pound) cryogenic box was craned up slowly and moved through a cavernous lab the onto the truck.

The drive on CERN's campus itself lasted only about a half-hour to test how—if at all—the infinitesimal particles could be transported by road without seeping out.

The antiprotons were then placed back in their usual lab area, and the operation was concluded with applause, claims of success, and a bottle of Champagne.

"Transporting antimatter is a pioneering and ambitious project," said Gautier Hamel de Monchenault, CERN's director for research and computing. "We are at the beginning of an exciting scientific journey that will allow us to further deepen our understanding of antimatter."