For an airplane designed for farmers, I'll guess that "ugly but functional" is fine. Beauty wasn't a serious consideration for their other agricultural equipment, or barns, or silos, or ...
“In 1934, family-owned Michelin, as the largest creditor, took over the bankrupt Citroën company. The new management commissioned a market survey, conducted by Jacques Duclos. France at that time had a large rural population which could not yet afford cars; Citroën used the survey results to prepare a design brief for a low-priced, rugged "umbrella on four wheels" that would enable four people to transport 50 kg (110 lb) of farm goods to market at 50 km/h (30 mph), if necessary across muddy, unpaved roads. In fuel economy, the car would use no more than 3 L/100 km (95 mpg‑imp; 80 mpg‑US). One design parameter required that customers be able to transport eggs across a freshly ploughed field without breakage.”
