are cars for gta 5 v2 by "elcreador"
Fixed for the actual game updates.
Downloaded from skechfab, specials thanks to the originals autors.
Converted and adapted by me to the gta 5 world.
Vehicles names:
akua1
akua2
akua3
akua4
akuair
atv
sandk3

Dissapears:
I use a simple trainer with an script to prevent that the cars disappear.
http://gtafiles.gtainside.com/downloads/ftph/1434638948_disappearing.zip



Enjoy.