If you are registered with nascar.com, you can listen live to the in car scanner of the 56 car Martin Truex Jr. (link below) Seems to be delayed by 5-10 seconds. Sign up and listen. Pretty cool.
http://www.nascar.com/trackpass/scan...a/?sc_cid=sm63
http://www.nascar.com/trackpass/scan...a/?sc_cid=sm63
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