Earn the indicated number of Bounty Points in Career mode to unlock the corresponding car:

Aston Martin DB9: 690,000
Audi R8: 1,153,000
BMW M3 E92: 690,000
Chevrolet Corvette Z06: 1,153,000
Chrysler 300C: 95,000
Dodge Charger SRT-8: 95,000
Dodge Viper SRT-10: 500,500
Ford GT: 895,000
Ford Mustang (1967): 12,000
Ford Mustang GT: 95,000
Lamborghini Gallardo: 895,000
Lotus Elise: 134,500
Mazda RX-7: 134,500
Mazda RX-8: 42,500
Mercedes-Benz SL65 AMG: 500,500
Mitsubishi Lancer Evolution IX: 370,000
Mitsubishi Lancer Evolution X: 500,500
Nissan 350Z (Z33): 283,000
Nissan 370Z (Z34): 690,000
Nissan GT-R (R35): 1,153,000
Nissan Skyline GT-R (R34): 370,000
Pagani Zondaf: 1,428,000
Pontiac Solstice GXP: 12,000
Porsche 911 GT2: 1,918,000
Porsche 911 GT2: 895,000
Porsche Carrera GT: 1,428,000
Porsche Cayman S: 283,000
Toyota Supra: 134,500
Volkswagen Golf GTi: 42,500

Successfully complete the indicated "Hot Car" event in Career mode to unlock it and its corresponding car in Quick Play mode:

Betrayed and Porsche 911 GT2: Successfully complete the "Betrayed" event in Career mode.
Decoy and Mercedes-Benz SL65 AMG: Successfully complete the "Decoy" event in Career mode.
Deep Water and Mazda RX-8: Successfully complete the "Deep Water" event in Career mode.
Drawbridge and Porsche 911 GT2: Successfully complete the "Drawbridge" event in Career mode.
Hornet's Nest and Aston Martin DB9: Successfully complete the "Hornet's Nest" event in Career mode.
Redline and Lamborghini Gallardo: Successfully complete the "Redline" event in Career mode.
The Stunt and Ford GT: Successfully complete "The Stunt" event in Career mode.
Versus and Dodge Viper SRT-10: Successfully complete the "Versus" event in Career mode.

Successfully complete the indicated "Be The Cop" event in Career mode to unlock the corresponding police car in Quick Play mode:

Dodge Charger SRT-8: Successfully complete the "Clean Up" event in Career mode.
Ford Mustang GT: Successfully complete the "Five-0" event in Career mode.
Lamborghini Gallardo: Successfully complete the "Turn Up The Heat" event in Career mode.
Mitsubishi Lancer Evolution IX: Successfully complete the "Crowd Control" event in Career mode.
Porsche 911 GT2: Successfully complete the "SWAT" event in Career mode.