On 4 October 1957, 14,000 people watched a large hangar on the outskirts of Toronto open to reveal a beautiful, large, white, delta-wing aircraft. The plane was the Avro Arrow interceptor. A third longer and broader than today’s Eurofighter Typhoon, the Arrow could fly close to Mach 2.0 (1,500 mph, or the maximum speed of Concorde), and had the potential to fly even faster. It was Canada’s Can$250m (US$1,58bn today) bid to become an aviation superpower.

https://www.bbc.com/future/article/20200615-the-record-breaking-jet-which-still-haunts-a-country