1939 Guidobaldi Guidomobile

Offered by Artcurial | Paris, France | February 2024

If someone said “Guidomobile” to you, chances are this is not what you pictured. This car was built – from scratch – by Francois Guidobaldi, an inventor and former cycling champion. After winning a cycling championship in the 1900s, he went on to patent a carburetor, a gas generator, and and more into the 1970s. But in 1939 he was working on this, which very much looks like a period Auto Union grand prix car.

Most incredibly, he built the engine from scratch. And it is an eight-cylinder two-stroke unit measuring 1,357cc in displacement and shaped like a star. It has dual ignition, two Roots-type superchargers, and a self-designed carburetor. It is said to have been capable of 180 horsepower. It resides right behind the driver.

Guidobaldi died in 1971, and the current owner purchased it out of a museum in 2009. It was only later, during a restoration, that the body was finally crafted in aluminum based on sketches by the original constructor. This one-off piece of madness has an estimate of $285,000-$395,000. More info can be found here.