Diesel Power Challenge 2018 - DAY FOUR: Like every event at this year's DPC, the weather and altitude play a role. The trailer races are no exception as the trucks see how fast they can carry a 10K trailer up an eighth-mile incline. One more event in this grueling diesel contest.
Special thanks to Diesel Power Magazine: http://www.trucktrend.com/events/diesel-power-challeng
