PGR3 - Own all cars???

[Homer-Simpson]

Ok its really doing my head in now not being able to own all cars, I have been through and I cannot work out which one I am missing. Can anyone out there help me

I have the following yet the badge for "Own all cars" does not show as being completed:-

Ariel
Atom 300 Supercharged

Aston Martin
DB9
DBR9

Bentley
Continental GT

Cadillac
Sixteen

Callaway
C12
C7
Sledgehammer Twin Turbo

Corvette
C6
ZR-1

Dodge
Viper GTS ACR
Viper SRT-10 Carbon
Viper SRT-10

Elfin
MS8

Farboud
GTS

Ferrari
288 GTO Evo
355 F1 GTS
575 M Maranello
Challenge Stradale
Enzo Ferrari
F40
F430
F50
F50 GT
Testarossa

Ford
Ford GT
GT40 MK 1
GT90 Concept
Mustang GT-R Concept
Shelby Cobra Concept
Shelby Cobra GT-500
Shelby GR-1 Concept
Supercar Concept
SVT Mustang Cobra R

Honda
NSX GT2

Jaguar
XJ220
XKR

Joss
Supercar Prototype

Koenigsegg
CC8S
CCR

Lamborghini
Countach 25th Anniv. (QV)
Diablo GT
Diablo VT 6.0 SE
Gallardo
Miura P400 SV
Murcielago 6.2
Murcielago R-GT

Lotus
Elise GT1
Esprit

Maserati
GranSport
MC12

McLaren
F1 LM

Mercedes-Benz
CLK-GTR SuperSport
SLR McLaren

Nissan
GT-R Concept
R390 GT1
Skyline GT-R V-spec 2 Nur

Noble
M14
M400

Pagani
Zonda C12 S 7.3

Palmer Jaguar
JP1

Panoz
GTR-1 Coupe
Panoz Esperante GTLM

RUF
CTR "Yellow Bird"
CRT-2
RGT
RTurbo
Supercar Concept

Radical
SR3 Turbo

Saleen
S281E
S7

Shelby
Shelby GT-500

Spyker
C8 Double 12 S

TVR
Cerbera Speed Twelve
Sagaris
Typhon

Toyota
GT-One

Ultima
GTR

Volkswagen
W12 Nardo Coupe

Wiesmann
GT

Please, please, please could someone let me know what I am doing wrong

 

[Homer-Simpson]

Ok - I have just been told how to get the medal

Think you've got to fill up the remaining 4 slots with 2nd versions of the cars

Like 2 f50's etc

I have just done this and got the medal Only a few more to go