Japan is pushing the limits of rail travel as it begins testing the fastest-ever shinkansen bullet train, capable of speeds up to 249 miles per hour.

Called the Alfa-X, the train is scheduled to go into service in 2030. Rail company JR East plans to operate it at 224 mph. That would make it 6 mph faster than China’s Fuxing Hao, which links Beijing and Shanghai and has the same top speed.

To cope with massive wind resistance when entering tunnels, the Alfa-X’s first car will mostly be a sleek nose, measuring 72 feet. With just three windows, there looks to be hardly any space, if at all, for passengers in the front. Painted in metallic silver with green stripes, the 10-car bullet train began test runs Friday between the cities of Aomori and Sendai at night, to be conducted over three years.

Japan’s bullet trains, which made their debut the year of the 1964 Tokyo Olympics, have become a symbol of the country’s focus on efficiency and reliability. Shinkansens are rarely late, and they depart Tokyo Station every few minutes for Osaka, Kyoto and other destinations across the archipelago, making them a viable alternative to air travel. The Alfa-X is a key part of a plan to offer faster services to Sapporo, the biggest city on the northernmost island of Hokkaido.

“The development of the next-generation shinkansen is based on the key concepts of superior performance, a high level of comfort, a superior operating environment and innovative maintenance,” East Japan Railway Co., better known as JR East, said in a statement.

Although the Alfa-X holds the title of the world’s fastest train right now, it may already be dethroned by the time it goes into service. That’s because a new maglev line is being built between Tokyo and Nagoya with operations starting in 2027. Traveling mostly through deep tunnels, the magnetically levitated train will travel at a top speed of 314 mph, cutting the time between the two cities to 40 minutes, from the current 110 minutes.