Hyperloop, a new form of mass transit involving capsules whizzing on magnetic fields through depressurized tubes, has achieved significant liftoff in the northern Netherlands, a company developing the technology said Monday.

A test vehicle was levitated and zipped through a tube at a testing facility for the high-speed transit system.

The European Hyperloop Center’s 420-meter (460-yard) tube is made up of 34 separate sections mostly 2½ meters (more than eight feet) in diameter. A vacuum pump sucks out the air to reduce the internal pressure. That reduces drag and allows capsules to travel at high speeds.

Hyperloop developers aim to have capsules speeding through tubes at up to 700 kph (435 mph). Its backers say it’s far more efficient than short-haul flights, high-speed rail and freight trucks, but it will involve significant investment in infrastructure.

So far, in the limited space offered by the test center, the speed has been modest.