Supersonic futuristic planes are aircraft that can fly faster than the speed of sound, which is approximately 1,236 kilometers per hour (768 miles per hour). These planes have the potential to revolutionize air travel by reducing travel time and increasing efficiency. Some examples of supersonic futuristic planes are:

1. Boom Supersonic: This company is developing a supersonic passenger plane called the Overture, which can fly at speeds of up to Mach 2.2 (2,717 kilometers per hour or 1,688 miles per hour). The Overture is expected to enter service in the mid-2020s and will be able to fly from New York to London in just three and a half hours.

2. Aerion Supersonic: This company is developing a supersonic business jet called the AS2, which can fly at speeds of up to Mach 1.4 (1,715 kilometers per hour or 1,065 miles per hour). The AS2 is expected to enter service in 2027 and will be able to fly from New York to London in just four hours.

3. NASA X-59 QueSST: This is an experimental supersonic plane being developed by NASA. The X-59 QueSST can fly at speeds of up to Mach 1.5 (1,852 kilometers per hour or 1,150 miles per hour) and is designed to produce a quieter sonic boom than traditional supersonic planes. The X-59 QueSST is expected to begin test flights in 2022.

4. Spike Aerospace S-512: This is another supersonic business jet being developed by Spike Aerospace. The S-512 can fly at speeds of up to Mach 1.6 (1,979 kilometers per hour or 1,229 miles per hour) and is expected to enter service in 2028. The S-512 will be able to fly from New York to London in just three hours.

Supersonic futuristic planes have the potential to revolutionize air travel by reducing travel time and increasing efficiency. However, there are also concerns about the environmental impact of supersonic planes, as they produce more noise and emissions than traditional planes. As a result, companies developing supersonic planes are also exploring ways to make them more environmentally friendly, such as by using sustainable fuels or electric propulsion.