All manufacturers of diesel cars and trucks are starting to worry how this will affect their sales, even if their products pass all current testing. I suspect that in a few months time we'll probably see some steep discounts on diesel vehicles to try and counteract the bad publicity and get them to moved off the lots.
The real concern in the RV world might be the impact on Class B's and C's that use diesel. Will their sales be so affected that they run into business difficulties? For some, like Leisure Travel Vans though it might be a blessing in disguise since it may offer them a chance to catch up on their order backlog.