@Steve Ecke, this answer is a copout. First of all, if you hadn't placed all those extraneous stacks of boulders, people wouldn't get stuck on them no matter what. I laughed when you stated that maybe the farmer built the fence into the side of the boulders. If you took the time to inspect the area I pointed out as @Sven did, you would see for yourself that this statement is pure garbage. Oh, and how about Glenwood Springs? I suppose there was a volcanic eruption that sprayed all those boulders across the city. Secondly, When vehicles were first introduced and those boulder stacks weren't there, there was no problem. Thirdly, since you insist on leaving those boulders on the map, the least you could do is make it so players can exit the vehicles so they can be retrieved. Seems to me that you just don't like being called out for an error in judgement.
@Sven removing or disabling the vehicles is just wrong. Like @GENETICZZ says, if you do this, you will need to add more bus stops.
The big issue here is after adding all the vehicles that are now in the game, the problem of being able to control them was magnified exponentially. The more vehicles, the more problems. Add to that the addition of the boulders. Maybe if you remove the bulk of the boulders and reduce the number of vehicles back down to the original three, this issue could solve itself.
As far as not having these issues on the dev servers, think about it. You are playing directly on the server itself. You are not having to log in through the internet therefore giving you as close to a perfect connection to the maps as possible. You don't have the FPS and Ping issues that we, the everyday player encounters.
You may not like what I have just stated. So be it. I am just stating what seems to be the general consensus among the community. Remove the boulders, cut the vehicles back down to the original three, those being the ZK, the Stryker and the Buggy, and you just might find that the bulk of the issues discussed here will clear up.
With all that being said,
Have a Nice Day!!!
P.S. @Steve Ecke, how's that for 'Less copy & paste and more own words'