XBXG posted a photo:

Mobile office

A rather unusual vehicle for commuting, but not for the American banker Hugh McDonald, who in the early 1930s has himself driven back and forth in this luxurious combination from his estate on Long Island to his office in New York.

The semi-trailer resembles an aeroplane and was built in accordance with aviation construction principles by the Curtiss Aeroplane Company in Florida. A lightweight, tubular metal frame is braced with wire cables. The Aerocar’s nose looks like a cockpit and is fitted with a compass, barometer, altimeter, speedometer and swivelling floodlights. The interior is furnished with lightweight wicker chairs and a desk. The galley features a refrigerator and there is also a lavatory with flushing toilet. The yacht was towed by a Graham-Paige Blue Streak fitted with a four-litre engine. A spare wheel was placed in the space normally occupied by the ‘dickey seat’. The towing pin of the trailer fits in a socket in the hub and the tyre damped out the shocks while driving.

Source: www.louwmanmuseum.nl

Louwman Museum
Den Haag, the Netherlands.