Well thats the beauty of how our legal system works. I, a plaintiff, would present facts that said the DRVM 3.0 was ADVERTISED to be able to show the rear of a trailer with a camera that FCA had decided to stop/not sell. That advertised feature swayed me as a consumer to buy their product vs their competitor. After purchasing said product, the advertised feature is unusable or otherwise does not exist. I would call that "False advertising, or misleading advertising"....
According to el google.
So, to recap. They advertised a feature of DRVM that we cannot use. We don't need to have purchased the tow mode camera for us to have standing here. The fact that we want to purchase it and cannot is enough in my mind for us to fulfil the prong of proving misleading or false advertising.
Now the other side is the defense. If you're the defense and arguing for FCA, and saying, "Well the DRVM can do what we said it could. Just because you can't buy that extra piece that is required does not mean we didnt fulfil our advertised feature." Also your other speculative argument that "will likely become available and hopefully soon"....
Now a judge would be the one to decide if this is fair and who has a stronger argument based on how the laws are written.
Gotta love our legal system and how we both have our own facts and perspective and a judge gets to pick which one is more "right".
There are legal precedents where companies have been sued for false advertising when features technically exist but are otherwise unusable or not as advertised.
One such case involved Apple and its claims about iPhone storage. In 2015, a class-action lawsuit was filed against Apple alleging that the company misrepresented the storage capacity of its iPhones, iPads, and iPods. The plaintiffs argued that while the devices were advertised with 16 GB of storage, the actual user-available storage was significantly less due to the size of the pre-installed iOS operating system. In essence, the advertised feature (16 GB storage) technically existed, but a substantial portion was not usable for consumers' personal storage as many would expect. The outcome of the case was a settlement agreement.
Another case involved Sony and its PlayStation 3 console. In 2010, Sony released a firmware update for the PlayStation 3 that removed the "OtherOS" feature. This feature, which was advertised as allowing users to install and run Linux on their PlayStation 3, technically existed when the consoles were sold, but was later rendered unusable by Sony's update. Sony faced a class-action lawsuit over this issue and ultimately agreed to a settlement.
Again - We paid ~+-$100,000 for a truck. Every feature advertised goes into that decision. Not just one or two line items listed on a window sticker. It's the whole package. Screw up one of those and you can convince a judge/jury/whomever that the feature was a contributor to that decision and "I" would argue that you have standing for a case. Laugh all you want, but unless you can convince me that you know exactly how a judge/jury/whomever will rule on a case, then it doesnt matter.