[brc]

MB have been working on this stuff for decades.

Often they develop these things in conjunction with a supplier like Bosch. They then get a period of exclusivity and then Bosch/whoever are free to sell the systems to other companies.

That's why you can look at an S-Class and figure out what's going to be in an ordinary car in 10 years time. ABS, Airbags, pre-tensioners, stability control, adaptive cruise-control - not all were MB inventions or even debuted on an S-Class, but all have been features of an S-Class long before everything else.