Quest - Intercept's Most Wanted #4
Quest Pickup - Cambria (I15) (Carmen)
Quest Location - Estoni (L9)
Quest Finish Point - Cambria (I15) (Carmen)
He is in the Fuel Station garage, kill him, report back to Carmen.
TIP: if you have a spare Merc, leave them in cambria while you do these quests so, when you complete it you can instantly get the next quest instead of walking back and forth wasting game time.
BUG: when talking to Carmen to finish the quest and get the reward the only button it allows you to press is the negative talk option, but it still gives the positive outcome.