1923 Persu Streamliner
Developed by Romanian engineer, Aurel Persu, was considered one of the earliest streamlined vehicle ever built (German had dibs with Rumpler Tropfenwagen the 1st streamline vehicle but that'll be in another article).
Persu spent huge chunk of his life researching the aerodynamic shape of a vehicle before he settled with rain drop shape in which he believed to be the least air resistance shape of all. So he opted to build a rain drop shaped vehicle.
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He described his vehicle as “Aerodynamically-shaped automobile with the wheels mounted inside the aerodynamic body”, which was interesting because at the time, every other vehicle wheels were either exposed or covered with bicycle fenders.

Persu obtained patent application for his vehicle design in 1924 by the German government. Note that he build this vehicle out of in his own pocket & help from couple of engineers most notably Ferdinand Porsche by providing 1.4L 20ps engine.
To put his creation to the test, he drove back & forth between Germany & Romania over the years with mileage of about 120,000km with the top speed of 80kph.

Of course, this attract a lot of attention from large manufacturers whom they approached him to buy his patent. Persu didn't think they would most likely put them into mass production, so he decided to turn it down.


Now the vehicle is remained for public viewing in Romanian Dimitrie Leonida Technical Museum in Bucharest, Romania unrestored.
http://www.dwrenched.com/2014/03/dwrenched-special.htmlhttp://www.autoevolution.com/news/persu-th...-car-31151.htmlhttp://www.diseno-art.com/news_content/201...su-streamliner/