stopped to look at a 2005 379 exhd today. c15, 550 horse, twin turbo cat. surprised to find out it is equipped with an automatic transmission, with a clutch. the wife said that her husband wasn't home and that she knew nothing about the truck. my question is .... how in the heck do you drive this truck. also, tell me about reliability. THANKS to ANYONE THAT CAN HELP ME !!!! !!!!