These unlockables are earned and useable only in the arcade portion of the game.

Bandit Chase mode Earn $40,000 overall.

Cadillac XLR 2004 Earn $150,000 overall.
Chevrolet 1967 Corvette Stingray Earn $80,000 overall.
Chevrolet Camaro 1969 Earn $40,000 overall.
Concept WK-10 (Bonus Vehicle) Stop 100 Racers in Cop Chase.

Dodge Charger 1969 Earn $135,000 overall.
Dodge Viper GTS-R Earn $275,000 overall.
Dodge Viper SRT-10 Earn $250,000 overall.
Ducati 999R Earn $190,000 overall.
Ducati Monster S4R Earn $100,000 overall.

Elimination mode Earn $80,000 overall.

Grand Prix Racer (Bonus Vehicle) Win All Gold Trophies in Evolution Mode.

Hummer H3 Earn $175,000 overall.
Husqvarna SM610 Earn $15,700 overall.

Infiniti FX45 Earn $210,000 overall.
Infiniti G35 Coupe Earn $50,000 overall.

Kawasaki VN2000 Earn $30,000 overall.
Kawasaki ZX-10 R Earn $315,000 overall.

Lamborghini Countach 1985 Earn $450,000 overall.
Lamborghini Gallardo Earn $375,000 overall.
Lamborghini LM002 Earn $70,000 overall.
Lamborghini Miura 1973 Earn $220,000 overall.
Lamborghini Murcielago Earn $400,000 overall.
Lamborghini Murcielago R-GT Earn $350,000 overall.
Lamborghini Murcielago Roadster Earn $420,000 overall.
Low Ridin' Road Hog (Bonus Vehicle) Stop 15 Racers in Cop Chase.

Mercedes-Benz CL65 Earn $300,000 overall.
Mercedes-Benz CLS Coupe Earn $110,000 overall.
Mercedes-Benz SL65 Earn $260,000 overall.
Mercedes-Benz SLR McLaren Earn $290,000 overall.

Nissan 350Z Earn $90,000 overall.
Nissan Skyline GTR Earn $160,000 overall.
Nitrous Sand Bug (Bonus Vehicle) Stop 15 Cops in Bandit Chase.

Prototype 93-WT DD (Bonus Vehicle) Earn $650,000 overall.

Saleen Mustang Coupe Earn $200,000 overall.
Saleen S7 Twin Turbo Earn $330,000 overall.
Subaru Impreza WRX STi Earn $120,000 overall.

T-Fin 609 Speedster (Bonus Vehicle) Earn $1,000,000 overall.
The Collector (Bonus Vehicle) Finish First in Elimination.
Triumph Speed Triple Earn $60,000 overall.
TVR Sagaris Earn $235,000 overall.