InfoComm 2019: RAM Commercial Showcases 2019 Ram 3500 Promaster Cargo 159″ WB EXT-High Roof Van June 19, 2019 | Home / June 19, 2019 rave-video / InfoComm 2019: RAM Commercial Showcases 2019 Ram 3500 Promaster Cargo 159″ WB EXT-High Roof Van InfoComm 2019: RAM Commercial Showcases 2019 Ram 3500 Promaster Cargo 159″ WB EXT-High Roof Van