My collection as it stands at the minute. All vehicles are unmodified and painted in appropriate colours. I have yet to decide on the final car, but it will most likely be a mid level vehicle like the Carbonizzare. More images here:
I know how to glitch out of NY in Bury the Hatchet. Its difficult and you need the car with you, but I can bypass the invisible barrier which fails the mission if you go a certain distance from the road. This is done by using invisible buildings by getting on the rooftops, if you fall through Michael turns invisible, and you simply come out down the street. The issue is getting the car with you, as you fail the mission if you leave it. I managed to explore a bit before falling through the map, and it turns out most of what you can't see is infact solid, maybe a base for something?
So how do you do it?
Its fairly difficult to explain, but you know when you get to the last part of the drive in Bury the Hatchet where you take a right turn to the cemetery? Well, on that corner there is a restaurant or something with a slanted roof. There are hedges all around it. Find the one nearest to the cemetary outside the restaurant and grab a Rancher or Saddler from the road. Park it near the hedge and use it to climb on top. Jump from the hedge into the parking area of the warehouse right next to it and run to the red wall at the end. Climb the wall and walk along the top until you reach another wall, then simply climb over to escape the main part of the map. Now its glitchy, you need to try and glitch Michael and make him invisible for just a second or two, this eliminates the boundaries stopping you from leaving the map for some reason. Now you can explore, but you can barely go anywhere since you need the car with you. Its possible to jump the car over the restaurant using a snow mound then do the glitch, which is what I did.
Also, you can see where North Yankton is by using the Lenny Avery website on the mission and setting a waypoint from that site to a random property in LS.
Having a rather annoying problem, which I'm sure those with expensive cars can relate to. It seems everyone is out to wreck your car, people throw sticky bombs at you if you go anywhere near them. Every time my Cheetah is blown up it costs me 8K to get it back, which I often can't afford.
Rockstar should have the opposition pay the whole insurance premium, it would discourage it further... In the past 24 Hours I've lost over 100K just in insurance. On higher value cars the penalty could be 10 to 12K. They end up paying $100 to $1000 towards it...