Yep... Remember a while ago when we discussed this when I first asked how to even make a cargen?
That is what happened when I attempted what you did AND... It also happens when I try using ANY vehGroups.
Remember I was trying to test it with emergency vehicles and the large city and all I got were random Huntleys, FQ2s, Baggers etc.
Who did you mention before who made a cargen pack here? YDrop or someone? Did they do individual car spawners or did they actually figure out how to spawn existing (and or created) groups?
I've tried every combo I can think of and still so far, nothing. Either no cars spawn at all OR I get the random spawn every car in the game cargen...