Comments - ThreeQuarter

It works with any P2 since 1407 version

Yes it will

Textures on cars are flashing?

Yes, it can =)

Because supporting of steam version of p2 disabled.

Game dir (contain Maps, Animations, Textures folders and etc)

1 - Your Postal 2 version may not contain this command
2 - You may type it incorrectly

Anyway you can find vehicles on custom maps, such as (cus-ProjectMaricaCity, cus-SeasideHill or cus-ProjectMaricaOasis)
Custom maps (Options -> Custom maps)

Cs619426.vk.me
Cs619426.vk.me
Cs619426.vk.me

Adding karma collision via 3Ds MAX. (only 3 types MCDBX,MCDCY,MCDSP)

I have no engine native source code.
You need karma collision primitives in your models, and bBlockKarma setting - true

Udn.epicgames.com

Try to host server with "mpDGT-Asylum.***", and change map via admin panel to your map with cars.

An old bulid of Unreal Engine can not initialize math engine (karma) at first map, the only one solution to starts server with map without karma objects (cars).

Where is the proof that it is broken?

Are you're kidding me?

Which game version do you use?

Both.
But, to original SP maps you should add cars via editor.

set-games.ru/index/projectmarica/0-8

Did you read the instruction?
So, exists simple way: open console in game, type there SET INPUT F USE and F key will be enter key for vehicles

Yes, it is.