In the early days of industrialization, most manufacturers were vertically integrated, including automakers. That changed over time, but the shift is reversing.

Toyota is now testing another, much older solution involving hydrogen: burning the stuff directly in an internal-combustion engine.

The automaker last week unveiled a race car whose inline-3 engine is designed to run on pure hydrogen. The race car is still being tested but will enter a round of the 2021 Super Taikyu Series race series in Japan this May.

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Toyota plans to go racing with a car whose internal-combustion engine runs on pure hydrogen.

Thousands of cars—including Porsches, Volkswagens, and Lamborghinis—have gone down with the giant cargo ship Felicity Ace, which had been on fire in the Atlantic Ocean for nearly two weeks. A salvage operation was underway to take the roll-on-roll-off car carrier to a safe area off the Azores when it sank on Tuesday morning. The fire was out by the time the ship went under the waves.

The weather had been rough at the time, a spokesperson for Felicity Ace’s Japanese operator, Mitsui O.S.K. Lines transportation company, told Bloomberg. The ship sank after listing to starboard around 220 nautical miles off the Portuguese Azores archipelago at around 9 a.m. local time on March 1. Salvage craft remain posted at the site of the sinking to monitor the situation, according to a press release from the Felicity Ace Incident Information Centre.

Da Vinci dreamed up a helicopter 400 years before they actually existed. Now, engineers have brought his design to life, but with a twist.