If you did not know, custom vehicles are now able to be created, and used. I don't know much on this, but this is a HUGE chance for LSPDFR, bringing maybe new patrol cars, and more.

List Of Vehicles

Batmobile - https://www.gta5-mods.com/vehicles/batmobile-v

Military Humvee - https://www.gta5-mods.com/vehicles/military-humvee

Bugatti Veyron & Lambo - https://www.gta5-mods.com/vehicles/modern-cars-bugatti-veyron-lamborghini-murcielago

"Many people are really excited about this, they say "it's happening" or "finally, we get real cars like in GTA IV and SA" well, no. For those people, this is so far from what a car mod should be, this is just like a fake way to get those cars, since it's just a static object using a car handling and a sound, but without a thousand properties that a normal car in game has. It's not possible to get cars like GTA IV or SA, the procedure is VERY different from this one. Please, with this comment I am not trying to discredit the autor, I think he made a very well job and intention, it's a good idea and it's the only alternative yet. This is only for people who believe in what's not real."

jpetrillo13 on the GTA-5 Mods website

But it's a nice step in a good direction, and i'm excited to see the future of mods which doesn't involve scripts and cheap reskins.