Possible Starlancer, set 2 cars. One on right (as far right as it can go), then other one on the left (as far left).
With a simple bit of maths I could add another 2 cars for both left and right grids, thus giving at 6 grid.
I'll have a go.
Niceone skunk, upload when I can upload
Edit:
Starlancer, I think 6 cars starting side by side, with a left hand corner near the grid is a bad idea. Might be good for MSR, but I doubt SA-MP would benefit from it.
Skunk, nice map lol Reminds me of the post-nuclear map by Max, this should be fun