Great news for Carolina Panthers tight end Greg Olsen ... whose classic Camaro just sold for $100k to a NASCAR team owner -- and 100% of the money went to an amazing cause.
Olsen put his custom '69 Chevy Camaro convertible up for auction -- with the entirety of the winning bid going to his HEARTest Yard charity ... which provides medical services to families of babies with heart problems.
Well, NASCAR team owner Rick Hendrick -- owner of Hendrick Motorsports -- saw the whip and HAD to have it .