Faulty air conditioning units on city buses have made for scorching conditions for drivers and passengers on some routes in recent days. Mountain Metropolitan Transit bus driver George Borja said temperatures have risen above 100 degrees inside his bus on multiple occasions. On June 19, Borja reported a temperature reading between 106-108 degrees on a thermometer located next to his driver's seat and other bus drivers have experienced similar, and sometimes warmer, conditions on their routes, he said. One driver told Borja that her bus reached 117 degrees on June 20. "This is not safe," Borja said. Drivers have opened windows on the buses to cool them down, to little use. "All the windows in