I saw at a car show years ago a Chevy minivan conversion in which a mechanism set a second row seat over the sidewalk and pulled it back with a less-than-able passenger. Does anyone know who makes these mechanisms? My searches result in wheelchair ramps and lifts.

This is the closest I can find - Turning Automotive Seating for Accessible Vehicles | Bruno Turny Seats, Turnout Chairs, and Compact Lift-Up Seating - but it doesn't address the height of the seat off the pavement or sidewalk.

Thanks,
Sixto
87 300D