Question: will there ever be a 500 foot roller coaster

Answer: Yes, Skyscraper is an upcoming roller coaster that will be located at the planned Skyplex complex in Orlando, Florida. Under development by American and Swiss manufacturers US Thrill Rides and Intamin, the attraction will be a Polercoaster model which utilizes an observation tower as its main support structure. After several delays, Skyscraper is expected to open in 2020 with construction on the Skyplex complex beginning in 2017. Upon completion, it will become the tallest roller coaster in the world at over 500 feet (150 m) and will feature both the steepest drop and highest inversion.