By Veronika Bondarenko Testing of the park’s newest “big kid” roller coaster is now underway. While Walt Disney (DIS) – Get Walt Disney Company Report parks are known for everything from childhood memories to Minnie Mouse ears, the one area in which it lags behind competitors is thrills. Even “big kid” rides like Space Mountain and Summit Plummet pale in comparison to the loops, drops and speed offered at other theme parks. A New Coaster Ride Is Coming SoonOne much-awaited change has been the Tron Lightcycle Run roller coaster in Walt Disney World. A clone of the coaster that was first launche…