2016 Nissan Titan Tow Testing in California Mountains

Nissan is testing their all-new 2016 Titan with the 5.0L Cummins against a 2015 Ford F-150 FX-4 4X4 and a 2015 RAM 1500 4X4 EcoDiesel on the 210 in Los Angeles County. Given the hour, I suspect they were doing a real world fuel economy towing road test up and over the 4,200' elevation Cajon Pass and back on the I-15.