Recently I have been writing a work I would categorize as contemporary fantasy, and the worldbuilding has been a major concern for me. Most contemporary fantasy novels I have read take place on Earth, but mine in set in another world. There is no possible way this could be set on Earth without major plot changes. I already have the mythology and culture of the world worked out. I'm just worried about the technology.
Since the story takes place on a world equivalent to modern Earth, should the technology have developed in different ways? I've already taken this into consideration when formulating the "Screen", which is a combination of a computer, a phone, and a television, but I'm a bit nervous about things like cars, the DJ at a nightclub, music, etc. Am I being overly paranoid, or should I put more thought into my world before moving on? If the latter, does anyone have suggestions?
EDIT: I spelled the title "wordbuilding" instead of "worldbuilding". Silly me.
