IMSA and Indycar have some cross=over potential but doubt NASCAR would impact it either way, other than potentially moving races, or qualifying, to other NBC channels. Think it's more you have to worry about other events on NBCSN limiting live coverage depending on growth but NBCSN seems to be very motorsports forward.
The big challenge is any race overlaps with Olympic coverage, racing WILL lose to whatever the pop sport is in 2020.
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