Never a good promotional look when trams grind to a halt because of no 'lectricity, at least trolleybuses can skulk off on their batteries and put on a pretence of normality. Skoda has been putting batteries on their trams for a decade or so, sounds like a good example to follow.
I hope at least Gold Coast doesn't do an Adelaide and lock passengers in the trams on OH&S grounds if they're not at a stop. It doesn't sound very occupationally healthy to be locked in a openable-windowless tram without air conditioning.
Tony P