1. [solved]

2. [solved]

3.
http://www.mediafire.com/imgbnc.php/4ff1c6b5a31e11e42eb0631acc51d874b077ea78ba5c- fdde08e792881e6896156g.jpg
http://www.mediafire.com/imgbnc.php/5a54eb9a29b0c3bd4ea839fa945a8835580d63367d98- ec443de9b0ed597cb8696g.jpg

4.
http://www.mediafire.com/imgbnc.php/52b799f90829701568e17127aca17b63db132c6ee7d8- b12de3ab2843612bfca76g.jpg

5. [solved]

6.
http://www.mediafire.com/imgbnc.php/1a584288906902f3fd5f152a0a9baa715c2307bb5a27- 93f0799b33b61a87c3786g.jpg
http://www.mediafire.com/imgbnc.php/43200342adba6e08c53eabf7d899f173040729d25eb4- 7209a01b1cda980918316g.jpg

7.
http://www.mediafire.com/imgbnc.php/9cd0655c3d31bb05e21b748449b44c2bec7a8f419a52- ff6ba99e82183e23f78d6g.jpg
http://www.mediafire.com/imgbnc.php/a68d00f64a9fa9f838611041826fcbcebaaad45b912c- 1e2a0140fcb7096ea3466g.jpg

8. [solved]
9. [solved]

1. Lincoln Continental

2. on the site it would be listed as "Lincoln Town Car Stretched Limousine", but there are a lot of them

4. something from Australia (Holden) or maybe another Opel-related car from South Africa?

5. AMC Gremlin, maybe this one: http://www.imcdb.org/vehicle_171523-AMC-Gremlin-1970.html

8. Looks like a Pontiac GTO (or another similar model), maybe this one: http://www.imcdb.org/vehicle_7599-Pontiac-GTO-1970.html

9. Bristol 405: http://www.imcdb.org/vehicle_277300-Bristol-405-1955.html taken from this scene: http://www.imcdb.org/vehicle_277310-Morris-Minor-Traveller-1952.html

Great stuff antp, for #1 maybe it helps to identify the left car as well?

I found #2 -> In the Loop

#4 the diamond-shape logo doesn't look like a Holden to me and the right hand traffic doesn't point to South Africa

#1 is from the movie Crash: http://www.imcdb.org/vehicle_78445-Dodge-Stratus-1995.html

Isn't #4 just an ordinary Opel D Rekord? Like this: http://www.imcdb.org/vehicle_71356-Opel-Rekord-1972.html ?

atom, thanks for #1.
#4 I think you are spot-on with the 1972 Opel Rekord. However my search on this site yielded nothing. The distinctice door painting (looks like a fruit to me) and the taxi sign would make it stick out like sore thumb. Possibly not included yet.

Btw, here's an alternative shot for #6
http://www.mediafire.com/imgbnc.php/43200342adba6e08c53eabf7d899f173040729d25eb4- 7209a01b1cda980918316g.jpg

#3 close-up. seems to be a European movie/car. my closest guess is a mercedes.

#6 looks seems to be a Ford Crown Victoria of 1998 or later (the most common car on the site )

Yes, no.4 is an Opel Rekord D in West German taxi colour, the plate seems to be from West Berlin.

No.3 is a Mercedes W 114 Coupe, 280 SE maybe.

Ingo, if it's a Mercedes W 114 it could be this movie http://www.imcdb.org/vehicle_186678-Mercedes-Benz-C-W114-1974.html

Yet no Opel Rekord with Taxi sign and Berlin plate on this website =(

Maybe the Merc is from 'The Damned United': http://www.imcdb.org/vehicle_278844-Mercedes-Benz-250-CE-W114-1969.html ?

Sure, cf the image in comments, it is that one. Good find