Blue Beast GTS (mission)
This is a vehicle side mission which is started by entering the vehicle instead of touching a phone. It is recommended you do these missions to help boost your points.
Enter the blue Beast GTS in southwest Island Heights to find out that two guys tore up a Cat House in south Island City and that Bubby wants them killed. After killing them, you need to escape to a garage in central Brookly Docks before the cops arrive (which they never do unless you obtained a wanted level from the killings).
Follow roads S/W, W big road, S over bridge, W big road before bridge.
Run over guys.
E, S over bridge, W small road.
Follow into Garage. END!
If the directions were too confusing, here is a video to follow: