REWARDS - Respect
Loc wants you to take out Madd Dogg's manager. Start heading towards the red blip on the radar and you'll receive a call from Loc stating that the chauffeur has already left the Burger Shot. You'll need to do a bit of damage to the vehicle to lure the guard out. Do a drive-by (not too much), lure the guard out, kill him and take control of the vehicle. If the vehicle is damaged, you'll have to get it repaired before heading to the next destination. Luckily, there's a Pay-n-Spray nearby should this happen.
Once you have the vehicle, drive it to the next blip on the radar. When you get to the location, you'll have to park in between the other cars and facing in the same direction. After you do that, it's time to pick up the manager from the awards show. Follow the other cars, making sure to keep in the middle. Once you pick up the manager, it'll be time to take the "scenic route" according to CJ. The two other cars will give chase as you make your way to the pier. Drive down the pier and bail out of the car before you reach the end. Mission done and respect earned.