There is always a massive pileup at the starting line, ALWAYS. This is a feature, not a bug, as it helps get players into the correct mindset for the game.
The only 'Official' thing in Gaslands is the rulebook.
Last but not least, the kitbashing for the Guns that could happen :)
Is it possible for different factions to start from other sides of the map?
I mean, take a close look at the white pickup I posted. (The Mini is another good place to look, but the gun's on the other side so harder to see details.)