Citro?

The Citro? 2CV (French: deux chevaux, literally "two horses", from the tax horsepower rating) was an economy car produced by the French automaker Citro? from 1948 to 1990.

The Citro? 2CV belongs to a very short list of vehicles introduced right after World War II that remained relevant and competitive for many decades - in the case of the 2CV, 42 years.
Pierre-Jules Boulanger's early 1930s design brief – said by some to be astonishingly radical for the time – was for a low-priced, rugged "umbrella on four wheels" that would enable two peasants to drive 100 kg of farm goods to market at 60 km/h, in clogs and across muddy unpaved roads if necessary. France at that time had a very large rural population, who had not yet adopted the car due to cost. The car would use no more than 3 litres of gasoline to travel 100 km. Most famously, it would be able to drive across a ploughed field without breaking the eggs it was carrying. Boulanger later also had the roof raised to allow him to drive while wearing a hat.

The level of technology in the 1948 2CV was remarkable for a car of any price in that era, let alone one of the cheapest cars on the planet. While colours and detail specifications were modified in the ensuing 42 years, the biggest mechanical change was the addition of front disc brakes in 1981 for the 1982 model year.

from Wikipedia