Phil,
Ten years ago, and for the Indy500 a friend who always went borrowed 
my scanner and loaded it with car/pit freqs.  They were available to 
the public, but I don't know where.  As I recall they were vhf and he 
really enjoyed listening.
Pat, K9JAUAt 10:36 AM 2/27/2016, you wrote:
>I listened here in Denver to one of our many sports stations as they =
>covered the Daytona 500 last weekend.  I heard some of the radio =
>transmissions between the pits and the drivers and wondered what =
>frequencies they were using.  I figure it must be VHF, of course, but it =
>would be fun listening in during an actual race.  I wish Denver would =
>get into racing and build a big track but when we built the latest =
>Bronco stadium, I was hoping they would build a retractible dome so we =
>could host a Super Bowl some day but the mayor, who is now the governor, =
>literally said on air that he was afraid it might get jammed.  Liberals! =
>  Can=E2=80=99t live without them and can=E2=80=99t shoot them, as Steven =
>Wright said once, haha.
>
>Phil.
>K0NX