Unlocked similarly to "Driving Mr. Bellic" except for with Packie.
This ability allows you order car bombs through your cellphone, same as you can order cabs from Roman, and will be unlocked after you achieve a 75% "Like" level, and will go away if you drop below 30%. Packie is awake from 3pm to 6am. See "Liberty City (5)" for advice on what activities will help raise his "Like" level the best.
You can check your progress:
Start--> Stats--> General--> Packie Like
**Can be done after completing story mode**