Just to clear things up, for cost purposes and simplicity, I will likely be considering a strictly electronic set-up, with a high torque 12v dc motor, as opposed to the pneumatics seen in the drawings ( courtesy of Ridley Motorcycles).
I think we have driven home the point that this thing still needs to be capable of being operated manually (overriding the powered mechanism) in the event of a problem of some sort.
If you want to use an electric actuator, your next challenge will be designing this in a manner that allows this to be done.
Electric actuators invariably use a ball-screw or lead-screw of some sort. If you want to operate the mechanism manually then this has to be capable of being back-driven (lead-screws don't like that, too much friction, and ball-screws are EXPENSIVE) or it has to be designed in a manner that it only pushes/pulls and the manual actuation overruns it.
Something in all of this reminds me of the automotive trend to use a push-button to operate a parking brake, thus replacing a simple mechanism that does exactly what the driver wants with an inordinately complex one that doesn't always do so - albeit in a way that saves a wee tiny bit of space between the seats so that the driver can have a bigger cup-holder.