@sabby_e17
I haven't collected all the cars in GT4 as well, mainly because some models are only available on the Used Car pavillions, either the 80's or the 90's ones, and they change every week of gameplay, thus creating a very small window to find certain cars.
So far I have 650 different Car models, still 70 to go to complete the entire car collection of GT4, and that's on a over 1000 hour saved file with 100% completion ;)
In GT3 I actually got all cars, but it was easier in that game, due to it having only 350 cars, in comparison to the 720 of GT4.
I love doing the Licenses, they give you a chance to master your driving skills and allow you to ascertain the best driving lines for most of the tracks and difficult sections of the game :)
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"