Well, Eventually made mine work with offline mode.
First of all I should say I'm using the v.1.1.1 and damage option doesn't work. At least with my current truck.
Secondly, I've got a suggestion Mr.0x90. Is it possible to decrease the amount of cash option 2 gives? you know 9,999,999 is too high and if you use it, it totally kills the game excitement. But if the amount be 50,000 for example, it would be much much better and more useful.