The Driver's Seat is produced by PRN, and aired on Sirius. Kernan is moving for family reasons, and he is going to be unable to do the show from his new home-base in Chicago.
This does make Kernan available for some additional weekend TV duties beyond his limited NHRA commitments. It certainly would be interesting to see Kernan sitting in the Infield Studio at Daytona for the first Nationwide Series race. That would get a big fan reaction.
Kernan has been a steady voice in the sport for a long time, and seems to have the type of personality that lends itself to simply "directing traffic" as a host and letting the other guests and announcers shine. That certainly is rare these days.
Kernan's departure from PRN and Sirius brings another interesting scenario to mind. If Kernan moves to the Infield Studio for the Nationwide races, will that mean Suzy Kolber will be doing the "top end" interviews for the NHRA coverage? DailyPlanet