Is it hoax? If this is not hoax it is good news, it will make bitcoin has higher value.
you can easily use google or take some time to visit their official website to find out for yourself. I have seen Microsoft and Dell accepting bitcoin directly, and they have mentioned this on each of their official website, i have never checked Benz though.
I researched and could not find any source where Daimler is accepting Bitcoin for payments yet. However there are news about Daimler of aquiring Bitcoin companies like this
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It seems Daimler could use the technology of the aquired companies to integrate payments into interconnected cars some time in the future.