nojayuk writes: An experimental Japanese magnetic levitation train has reached a speed of 603 km/h, breaking the world speed record the same train set last week of 590 km/h. "Central Japan Railway (JR Central), which owns the trains, wants to introduce the service between Tokyo and the central city of Nagoya by 2027. The 280km journey would take only about 40 minutes, less than half the current time. However, passengers will not get to experience the maglev's record-breaking speeds because the company said its trains will operate at a maximum of 505km/h. In comparison, the fastest operating speed of a Japanese shinkansen, or "bullet train" is is 320km/h. ... Construction costs are estimated at nearly $100bn (£67bn) just for the stretch to Nagoya, with more than 80% of the route expected to go through costly tunnels, AFP news agency reports."