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The other two series, strangely, used imported chassis. Strange, because Franco didn't like to import and instead always wanted to favour national businesses. It's said that trams and trolleys died out in Spain because there were lots of bus factories and producing buses was being favoured by the government as it was seen as more modern. Ironically, Spain has no oil so all gasoline has to be imported.
I don't know how many lines there were simultaneously at its furthest extent, in total over time there were 13 trolleybus lines, but seeing the short existence of the system, it was probably close to that number in its brief heyday. Although a few of those lines were just partial services. I couldn't find any maps showing trolleybus lines.
Here's a picture from 1968, the last year of operation, in the outskirts of the city.
Trolleybuses will never make a comeback in any place in Spain. There's one line in Castellón, but it works as a sort of proto-BRT faggotry and was probably the result of some bribery scam. It's even called "Tram" ffs. Spaniards are some of the worst NIMBYs out there that will throw a fit over some wires ruining the city's "natural beauty", and they're obsessed with disruptive technology, a sort of appeal to faith when unwilling to accept that solving problems carries inconveniences. Trolleybuses are seen as something old and for poor countries, as if they were rich somehow.
