Per Ola Kristensson and Keith Vertanen, at the University of Cambridge's Computer Laboratory, have developed a method of allowing speech-recognition programs to share their thoughts, as it were, with the user, in order to speed up the correction process.
The Belkin hub should achieve an actual transfer speed of about 75Mbps after the overhead associated with error correction and such with a range of about 10 un-walled meters.
The speed at which things can go wrong and the margin for error correction in a car is radically different from airplanes under most conditions, and the cross-cumulative effects of contextual disturbances means that car companies cannot really simulate everything in advance.