The Blue Tram - El Tramvia Blau

I know, I know, it is clearly something for tourists, but ...is there someone from Barcelon who never used the Tramvia Blau (Blue Tram)? And if there is, what is he waiting for?
I remember nothing that made me as happy as boarding the Blue Tram to, and then the Funicular to take me to the Tibidabo amusement park with my family!
Obviously, for me the most important thing was not that we were riding the only tram left in the city, or travelling in a wagon built in the early twentieth century, but getting closer to my dream destination, the amusement park. Specifically, the 1276 meters it takes, bridging a height gap of nearly 100 meters, from Kennedy Sq to Doctor Andreu Sq, who, for the record, was the driving force behind this tram line.
The Tramvia Blau was the only one circulating in Barcelona from 1971, after the other lines were replaced by buses, until 2004, when the Trambaix started to circulate. 
Of course, if someone came from another planet and saw these two trams, he surely would doubt that the modern tram along Diagonal Avenue and the old one in Av Tibidabo are individuals of the same species!