Earning the following amount of Reputation Points will earn you the reward listed:

Ambulance - 40,000 RPs
Baxter - 45,000 RPs
Bulldog - 5,000 RPs
Cannon - 10,000 RPs
Dundas - 15,000 RPs
Empire - 20,000 RPs
Hastings - 2,500 RPs
Hearse - 500 RPs
Kenyon - 30,000 RPs
Mankato - 55,000 RPs
Orbital - 50,000 RPs
Outlaw - 35,000 RPs
Postal - 25,000 RPs
Rocket - 65,000 RPs
Taxi - 60,000 RPs
Welch - 70,000 RPs