Maybe any automaker could take liability too, maybe not. It's all just words in the wind until they actually do it. Mercedes put their money where their mouth is and I respect them for it. It's the opposite of bullshit.
As long as you clearly understand what they are actually taking liability for, and what the capabilities of their system are, feel however you like.
IMO it's a misleading marketing tactic to position themselves competitively as having any kind of self-driving technology by recognizing that you can play games with the SAE levels to make the system sound impressive.
It initiates a radical paradigm shift that permits the vehicle to take over the dynamic driving task under certain conditions in heavy traffic or congestion situations on suitable sections of freeway currently up to a speed of 60 km/h. This ultimate luxury experience enables customers to win back precious time when in the car through relaxation or productivity. For instance, they can communicate with work colleagues via in-car office tools, write messages and emails via the head unit, browse the internet or just sit back, relax and watch a movie." [1]
I'm confused where you see the opportunity for any ambiguity or misunderstanding. Even the name "SAE Level 3 DRIVE PILOT" tells you the limitations. If you want misleading, look at what Tesla's pulling with their "Full Self Driving".
In the end, users only care about what a feature enables them to do, not how impressive the tech behind it is. Being able to relax and watch a movie while sitting in busy traffic is a great value proposition.
