After observing one of these chair cranes in action over the weekend (so cool) I wanted to find it online. It seemed like it would be sold by a unique one-off company where this product was their only product - the plausible result of a Kickstarter campaign.
Turns out this awesome design solution, for the constraints of using a wheel chair while also driving a truck, comes from what seems to be an old boring company. What cool thing should the old boring company you're involve with make next? Link.