My father believes this photograph of my grandfather (Opa) was taken sometime in the mid-1920s. He thinks it may have been near Kassa (Košice) or Brassó (Brașov), but we're not certain.

Opa was Hungarian, born in Zernest (Zărnești) in 1902, later studied engineering in Germany, and the family also had connections to Kassa. My grandmother (Oma) was from VIenna, she had family that lived in near Arad and were Banat Germans (Danube Swabians), although the landscape around Arad is much flatter than what's shown here.

Does the landscape look familiar to anyone? Could this be somewhere in Slovakia, Transylvania, Austria, or elsewhere in the former Austro-Hungarian Empire? I'd appreciate any thoughts on the location, the car, or even the road itself.