Original: These two variations are built jointly by Adtranz ( now Bombardier Transportation ) and Construcciones y Auxiliar de Ferrocarriles ( CAF ) between 1994 â '' 97 .
Simplified: These two variations are built jointly by Adtranz ( now Bombardier Transportations ) and Construcciones y Auxiliar de Ferrocarriles between 1994 â '' 97 .