Sorted by Hot Rod magazine:
http://www.hotrod.com/thehistoryof/hdrp_0610_top_car_movies/index.html
All of these films are available on DVD. I have marked films that are missing from IMCDb or need some work.
1. American Graffiti (1973)
2. Two-Lane Blacktop (1971)
3. Vanishing Point (1971)
4. Bullitt (1968)
5. The Gumball Rally (1976)
6. Thunder Road (1958)
<--- missing
7. Dirty Marry, Crazy Larry (1974)
8. Smokey and The Bandit (1977)
9. The Blues Brothers (1980)
10. The Hollywood Knights (1980)
11. Mad Max (1979)
12. The Road Warrior (1981)
13. Le Mans (1971)
14. Gone in 60 Seconds (1974)
15. Corvette Summer (1978)
<--- needs some work
16. More American Graffiti (1979)
17. Funny Car Summer (1974)
<--- missing
18. Cannonball (1976)
19. White Lightning (1973)
<--- missing
20. Death Race 2000 (1975)
21. Eat My Dust! (1976)
<--- missing
22. The Lively Set (1964)
<--- needs some work
23. The French Connection (1971)
24. To Live and Die in L.A. (1985)
25. Viva Las Vegas (1964)
26. Ronin (1998)
27. Against All Odds (1984)
<-- needs work?
28. Christine (1983)
29. Cobra (1986)
30. Hot Rod (1950)
<--- missing
31. Hot Rod Girl (1956)
<--- missing
32. The Cannonball Run (1981)
33. The Driver (1978)
34. Used Cars (1980)
35. Gone in Sixty Seconds (2000)
36. Hot Rods to Hell (1967)
<--- missing
37. Tucker: The Man and His Dream (1988)
38. Goldfinger (1964)
39. The Italian Job (1969)
40. The Fast and The Furious (2001)
Plus ten best car movies
not available on DVD(?).
1. Heart Like a Wheel (1983)
<--- missing
2. The California Kid (1974)
3. The Last American Hero (1973)
<--- missing
4. King of the Mountain (1981)
<--- missing
5. Greased Lightning (1977)
<--- missing
6. Johnny Dark (1954)
<--- missing
7. Grand Prix (1966)
<--- needs work?
8. Moonrunners (1975)
<--- missing
9. The Racers (1955)
<--- missing
10. To Please a Lady (1950)
<--- missing
What's you're favorite car movie ? And who want's to start chasing these missing films ?