Nice work, I can help by adding some data:
1 - Citroen CX
2 - Audi 80/90, Saab 9000
3 - Peugeot 205, by the roof I'd say a convertible (CJ or CTI, I tend the former)
4 - yes, that's a Mk. V Celica (check 2cv AK400 van on the right
5 - Renault 5, last series (2nd generation, post-85)
6 - that's a though one .. could be a Suzuki SJ series (though I never saw one like that) ... I do not know where the movie is taking place (that'd help)
7 - ok
8 - That's a Renault 21 (sedan version), and in front it seems to be a Peugeot 309
9 - That's a Renault Master or Trafic (according to the country), I think LWB
10 - ?
11 - is that a Traction Avant?
12 - car is a Renault 21 SW (it had a specific name, I guess)
13 - Correct, that looks like a Primera hatchback
14 - as #12
15 - another R21 sedan, lloks like the restyled model
16 - I'd say by the dimensions, a Peugeot 405 (typical for a taxi also)
17 - see #4
18 - yes, that a Mk.I Clio
19 - correct, Peugeot 309
20 - That's a Citreon BX
Good shots the bikes are difficult, hope only for my untrained eye
1 - Citroen CX
2 - Audi 80/90, Saab 9000
3 - Peugeot 205, by the roof I'd say a convertible (CJ or CTI, I tend the former)
4 - yes, that's a Mk. V Celica (check 2cv AK400 van on the right
5 - Renault 5, last series (2nd generation, post-85)
6 - that's a though one .. could be a Suzuki SJ series (though I never saw one like that) ... I do not know where the movie is taking place (that'd help)
7 - ok
8 - That's a Renault 21 (sedan version), and in front it seems to be a Peugeot 309
9 - That's a Renault Master or Trafic (according to the country), I think LWB
10 - ?
11 - is that a Traction Avant?
12 - car is a Renault 21 SW (it had a specific name, I guess)
13 - Correct, that looks like a Primera hatchback
14 - as #12
15 - another R21 sedan, lloks like the restyled model
16 - I'd say by the dimensions, a Peugeot 405 (typical for a taxi also)
17 - see #4
18 - yes, that a Mk.I Clio
19 - correct, Peugeot 309
20 - That's a Citreon BX
Good shots
the bikes are difficult, hope only for my untrained eye 
