Thanks for your responses
Yes Jbaent, I wrote quickly, but of course, I know the difference between a lap steel and a pedal steel...
Usuals pedal steels have pedals to change the strings tuning while playing, (a little bit like a whammy bar). These pedals are activated by feets
and you have also a volume pedal to create that typic mellow sound.
And indeed I heard that PF's pedal steel is customized, but I don't know exactly what are the "things that are moved with the knees" ?
BTW, PF is credited "lap steel" on do america, I don't know if it is a writing error, or if he actually plays lap steel on this tune rather pedal steel as ussual, my guess is the later.
And his father created the pedabro, which is a pedal steel with a dobro neck