I don't know if the vehicle has been taken to the Soviet Union. No information available. The car was captured as a trophy - a fact.
License plates indicate that the car was assigned to some military unit. So machine can be take in the Soviet Union only in the composition of the this military parts of.
Pay attention to the flags. Flags were used by the highest military leadership of the Soviet army to move outside the zone of Soviet occupation.
Given example.
In 1994 in Russia the book "170 000 kilometers with G. K. Zhukov" was published. Alexander Buchin, the driver of Marshal Zhukov in 1941-1948, wrote this book.
A quote from the book:
«Marshal Zhukov represented the USSR in the control Council and quite often went there for meetings. Without chic: two flags on the front wings of "Packard", "Chevrolet" with guarding. That's all.»
«Маршал Жуков представлял СССР в контрольном совете и довольно часто ездил туда на совещания. Без шика: два флага на передних крыльях "Паккарда", "Шевроле" с охраной. Все.»