Car belonging to missing Prague 6 couple Marie Drasnarova & Premysl Herzan found in Esztergom, Hungary, with no number plates and no personal belongings; cops say interior was "covered in unidentified chemical"; pair were last seen in June, at rest area by McDonald's on D1 motorway, near Cechtice, Central Bohemia, supposedly en route to Moravia (Nova) [Social Media Post]