GTA III R3 Missions

Some vehicles have the special ability that lets you do missions, here are descriptions for each. Just hop into one of the mentioned vehicles and press R3 (the right analog stick in). You must complete all of these for 100%!

R3 Missions

Vigilante Missions
You can do Vigilante missions in the Police Car, FBI Car, Enforcer, or the Rhino. If you you can get 2 felony stars for your hideout by doing the vigilante missions in each of the 3 parts of the city. 10 criminals killed in 1 city will give you 1 star, 20 criminals killed will get you a 2nd star, but then you can't get any more stars from that part of the city.

R3 Missions

Firefighter Missions
Hop into a firetruck, and put out 20 fires in each part of the city. After 60 fires are put out, you get the flamethrower at your hideout.

R3 Missions

Ambulance Missions
What some people consider one of the hardest things in the game: Ambulance Missions. If you deliver 45 pedestrains to the hospital, you get the health icon at your hideout. Delivering 85 gets you the Adrenaline pill at your hideout. If you can complete level 12, you get Infinite Run. The ambulance can only hold up to 3 passengers, and each level represents how many people you need to get. So for level 12, you need to make 4 trips! And you can't ever change your ambulance while doing the missions. Drive carefully! I reccommend doing it in Staunton Island, I found it to be the easiest there.

R3 Missions

Taxi Missions
Deliver 100 people in the taxi, anywhere, and it doesn't have to be in a row, and you'll get the Borgnine Taxi. Looks cooler, and it's a little better, but you're going to be sick of taxi missions anyways by then so it's kind of useless.