Your coworker doesn't know how to drive with the DCT, which operates more like a MT than an AT. Your coworker is likely inching forward in traffic, which is causing the DCT to feather the clutch continuously, causing it to overheat. Sounds like they should trade in for an actual automatic since they don't know how a DCT works.
Hundreds of thousands of people driving DCT cars do this every commute. You think most people have the slightest idea that their DCT isn't a normal auto? Build a trans that can't cool itself the way 90% of Hyundai owners will drive it. Bravo Hyundai!
Of course it has nothing to do with the 7 speed DCT just being a giant pile of shit. They've had 3 years to straighten it out, a recall, and the new ones still have the same issues with vibration and dangerous lapses in acceleration.
Read the following quoted directly from ABC News:
“Hyundai is recalling about 41,000 small SUVs in the U.S. because a software glitch can stop the vehicles from accelerating.
The recall came after pressure from the National Highway Traffic Safety Administration. It covers 2016 Tucson models with seven-speed dual-clutch automatic transmissions made from May 20, 2015 to May 31, 2016.
Hyundai says it started getting reports in June that the engines would rev but the SUVs wouldn't move after coming to a stop. The problem was intermittent and often didn't repeat itself, the company said in government documents.
Engineers traced the problem to the transmission control computer that monitors driving to refine gear shifting. If the gas pedal is repeatedly cycled, the Tucson's may not accelerate, increasing the risk of a crash.
Hyundai at first sent a service bulletin to dealers but decided to do a recall after meeting with the safety agency on Aug. 10.
The recall began Sept. 7. Dealers will reprogram the transmission computer.”
Wherefore Art Thou Hyundai Quality?"