 The HTX logo and the NRG Stadium image faded when heat was applied and returned when the heat source was removed.In late 2016, Uber had threatened to leave Houston ahead of the Super Bowl LI festivities, insisting various city regulations, including fingerprint background checks of drivers, were too burdensome and prevented drivers from working.Houston officials and Uber reached a compromise in December, which determined that Houston would continue to require a fingerprint check for drivers but eliminate requirements for driver drug testing and physicals through at least February 5.