During the petroleum crisis of 1973 there were attempts to modernize passenger transport; like the use of Ganz-Mavag locomotives – the so-called Hungarian train – between 1974 and 1978 in a failed attempt to develop a fast connection between Rio and São Paulo. In 1990 services between Rio de Janeiro and São Paulo and between São Paulo and Belo Horizonte had all but ceased. There was an attempt to reinstate the "Trem de Prata" (silver train), a luxury service between the Rio and São Paulo run by a private company which ran for a short while but could not compete with the air and road connections between these two cities. A sparse service continued until 1996 but these ceased with the privatization of the RFFSA.