Ron Schultz, Cat's sales manager-global on-highway trucks, provides succinct overview of the new axle-forward CT681 Class 8 truck model. The CT681 is now in production and is the second model in Cat's on-highway truck line, the other being the CT660 axle-back rolled out in 2011. What's more, he reveals that Cat will roll out a third work truck next year-- the long-nose. axle-forward CT680.