Three Wheelers & Berets

Berets are, and have been, popular with motor bikers, especially in the era before compulsory helmets were introduced. 

Interestingly, it's not only straight 2-wheel bikes, but three-wheelers in a variety of concepts that feature boineros.  

Like the home built Panther 600cc 1-cylinder combination pictured above, to Ural-Dneprs and Harley Davidsons with sidecars and Messerschmidt trikes. 

It can even combine a typical passion of beret wearing, riding and smoking a pipe.