This is a paid asset, but now you can download 50s, 60s and 70s Car Pack (6 Cars) for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
50s 60s and 70s Car Pack (6 Cars) v1.0
This Asset Includes:
-6 Vehicles Assets
-Each vehicle in its own file with separate documentation and licenses along with their prefabs
-A demo scene to showcase all vehicles in one scene
LOD/Mesh Info:
1950s Classic Car:
-LOD_1 (Detail): 18,422 tris
-LOD_2: 14,376 tris
-LOD_3: 5,873 tris
-LOD_4: 4,173 tris
1960s Muscle Car:
-LOD_1 (Detail): 19,788 tris
-LOD_2: 15,394 tris
-LOD_3: 6,133 tris
-LOD_4: 3,738 tris
1950s Hot Rod:
-LOD_1 (Detail): 26,614 tris
-LOD_2: 20,688 tris
-LOD_3: 7,828 tris
-LOD_4: 6,147 tris
1960s Muscle Car #2:
-LOD_1 (Detail): 17,950 tris
-LOD_2: 13,796 tris
-LOD_3: 6,077 tris
-LOD_4: 4,172 tris
1970s Muscle Car:
-LOD_1 (Detail): 22,304 tris
-LOD_2: 18,116 tris
-LOD_3: 7,324 tris
-LOD_4: 5,334 tris
1960s Muscle Car #3:
-LOD_1 (Detail): 25,766 tris
-LOD_2: 21,552 tris
-LOD_3: 7,928 tris
-LOD_4: 6,706 tris