It is ER-900, but otherwise you found it. The car is now located at the Avtorelikviya Museum in Kharkov, Ukraine
Dmitry Schvarchevsky found the car, which was a university diploma project between 1976-1978 and restored it. Mechanical base was a Zaporoshetz. It is 3750 mm long, 1115 mm wide and 950 mm tall, powered by a 960 cc ZAZ engine.
Here are a few more pictures