[kabel]

fine idea if cost is no object. a single inboard air jack unit usually runs about $450
I guess you would need at least three if not four.

Then there is the matter of engineering them into location in the frame that can handle the load, and have the internal clearance...

I have always thought that some kind of airbag lift system would be handy, and easily implemented. But it would have to raise the car high enough to get jack stands under it. Trying to jack the car up when it is less than two feet from a wall or another car is not fun.