This car was the brainchild of Cesare Bossaglia (father of the engine for the Alfasud) .
In the 60s He joined Nicoḷ Donà delle Rose (active with his brother in the kart field) to produce the DRB (the initials of Nicoḷ and Cesare). The DRB was planned to be a Gran Turismo car with an original 1000cc two-stroke engine. The engine was ready and produced 75cv in its standard version and 115 in the tuned one. The body was designed by Bossaglia himself but was never completed and the project was dropped.
the other pictures I found are from Biz5300's friend in Milan...