This paper will walk you through the proof-of-concept and technical details of exploitation for IOActive's recent NFC relay attack on the newest Tesla vehicle, the Model Y. To successfully carry out the attack, IOActive reverse-engineered the NFC protocol Tesla uses between the NFC card and the vehicle, and they then created custom firmware modifications that allowed a Proxmark RDV4.0 device to relay NFC communications over Bluetooth/Wi-Fi using the Proxmark's BlueShark module.