[Sound Fix] Found some way to solve the problem this car doesn't have external or other sounds with the latest version of AC.
Do it yourself!
1.) Google:Search to Caterham Seven 620R 0.5 here at Race Department. Take the sfx folder and open GUIDs.txt. Contains 19+1 (1-19 'event:/' and third from the bottom 'bank:/') lines with "rr_caterham_academy_620r" entries. Rename them to "caterham_academy".
2.) Open the installation folder of this original package and overwrite it. [SFX] Then rename the "rr_caterham_academy_620r.bank" to "caterham_academy.bank" and copy it also there (old files should be removed or swapped both of course) .
Sounds = FIXED!