12
votes
2answers
726 views

Why are there no 2,3,4,5 tier bunk beds on airplanes?

Lie-flat seats in business class, are a fact of life. Even private cabins and showers are now a fact of life on airplanes. I have traveled on bunk beds in economy style class train cabins for >22 ...
12
votes
2answers
13k views

What is the fastest speed a passenger airplane flies at?

How fast does the world's currently fastest passenger plane fly (cruise speed)? Do any passenger planes fly faster than the speed of sound?