Kind of a cute little detail if you decide to pick up Rogue in the old Porsche (retrieved in the container via Ebunike) for the date.
Mission Required:
Chippin' In - Keep Grayson alive after nabbing the Malerion Arms. After he gives you the key for sparring him open up the marked contaniner on the map.
Burnin' Love - This mission should pop up shortly after Chippin' In. I chose to take Johnny to his alleged burial grounds and then took this car directly to the date.