feat(balance): Slightly lower solar car odds

[RoyalFox2140]

Checklist

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Purpose of change

Solar is incredibly common, enough to the point that it's commonality means it's a little trivial for players to stockpile panels. This slightly slashes the odds for various vehicles, which will redistribute the vehicles to other types.

Describe the solution

I've changed the rara_x bubble car to be fairly less common as if you drive on highways or search parking lots you'll find them fairly often. I've slightly changed other electric cars a bit, this will primarily make solar cars less common but also make electric hippie vans and in some cases electric SUV's slightly more common due to how distributions work.

Describe alternatives you've considered

A few other things with distributing solar around the world.

Testing

Tests, primarily. It will load but I don't know if tests are dependent on the odds.

Additional context

I have a few other ideas.

[chaosvolt]

Fairly small weight changes, seems okay to me.

One of these days I need to give power generation and consumption for grid stuff an audit, which will likely make solars less valuable while making wind and water more worthwhile relative to them, but eepy.