Yeah, why does Universal do this super secretive approach anyway? I know why Disney does their approach but Universal? No idea. It does more harm than good.
If there where more info substantial info about Mario Kart, along with ride pictures, there wouldn't be a need for this leak situation. It just doesn't make. You don't say "We spent 6 years developing this attraction!" and then show basically nothing.
Maybe its because Universal isn't as..."""passionate""" about their rides(?) as Disney?