UPDATE: More Unlockable Cars in GT4

Actually, there are more than 10 sections in Gran Turismo 4 where you can unlock different car models. So far, I've already posted the guides from Game Spot (www.gamespot.com) on how to unlock the cars in 4 sections including License Center, Beginners Hall, Professional Hall, and Extreme Hall.

Now get ready to hop in 3 continents and know how to unlock the cars found in American Hall, European Hall, and Japanese Hall. There are lots of exciting and rare vehicle models in these 3 sections like the patented Mercedes-Benz Motor Wagen produced in 1886, and the Honda Life van model equipped with Honda cabin filter.

Unlockable Cars in American Hall

CHEVROLET Corvette Convertible (C1) '54 - Win American Championship
CHEVROLET Camaro LM Race Car '01 - Win Stars and Stripes
CHEVROLET Chevelle SS 454 '70 - Win American Muscle Car Championship
PLYMOUTH Super Bird '70 - Win Classic Muscle Car Championship

Unlockable Cars in European Hall

ALFA ROMEO Giulia Sprint Speciale '63 -Win 1000 Miles
VOLVO 240 GLT Estate '88 - Win European Hot Hatch Car Championship
MERCEDES-BENZ Benz Patent Motor Wagen '1886 - Win European Classic Car Championship
CITROEN 2CV Type-A '54 - Win French Championship
ALFA ROMEO 155 2.5 V6 TI Race Car '93 - Win Italian Festival
MERCEDES-BENZ AMG CLK-GTR Race Car '98 Win German Touring Car Championship
LOTUS Europa Special '71 - Win British Light Weight Car Race
JAGUAR E-Type Coupe '61 - Win British GT Cup
JAGUAR XJ220 LM Edition '01 - Win European Championship
MERCEDES-BENZ AMG 190E 2.5 16V Evolution II (DTM) '92 - Win Schwarzwald League B
BMW M3 GTR Race Car '01 - Win Schwarzwald League A

Unlockable Cars in Japanese Hall

NISSAN Fairlady Z Concept LM Race Car '02 - Win Japanese Championship
NISSAN MOTUL PITWORK Z (JGTC) '04 - Win Japanese GT Championship
NISSAN SKYLINE Hard Top 2000GT-R (KPGC10) '70 - Win Japanese 70's Classic
MITSUBISHI HSR-II Concept '89 - Win Japanese 80's Festival
NISMO 400R (R33) '96 - Win Japanese 90's Challenge
HONDA LIFE STEP VAN '72 - Win Japanese Compact Car Cup

More guides on how to unlock cars in other sections in GT4 will be coming soon… so watch out for it.