That's what i'm saying, it really can't be a traditional airbag suspension.
Only way you could really do it is to have cylinders with compressed air in them. But once the air is gone, no more up and down
On a side note, I forgot where I saw it, probably in a magazine, but they took an electric r/c and made it a lowrider by have servos connected to each a-arm(I think it was) Pretty trick, and it could go as long as the batteries were charged.
Ya I saw that also I think but it was pretty cool.
As for air ride on what? if its like a truck or something big you could always make a trailer for it and have like a small compressor on the trailor but man air ride that would be a big project.