I saw it at a plant show a few years ago with a few inches of trunk and could not believe it was a Bromeliad. I immediately knew I had to have one.
I saw 'Shelldance' at the same show also with a few inches of trunk. 'Shelldance' has been slowly growing. I doubt I will ever see the trunk that is capable of.
Aechmea 'Little Harv' has quickly produced a clear trunk of 18".