On: 'Underwater bicycle' propels swimmers forward at s...

[tetris11]

For mere fractions of a second, I can outwalk a jet.

[globular-toast → tetris11]

Actually I think you are making a slightly different observation about acceleration. We were talking about top-end speed, not acceleration from a standstill.

[IncreasePosts → tetris11]

Well that's easy, jets can't walk.