"So whatever's on the other side of this has changed from being a hot plasma into hydrogen gas."
This is because most cars work on fuel cell technology and Hydrogen gas.
Usually nitrogen is used or in more extreme conditions hydrogen gas.
And still down, ever through immense depths of hydrogen gas.
The galaxies have run out of hydrogen gas, and no new stars are formed.
In some cases radiation breaks down plastic and makes hydrogen gas.
A nebula is usually made up of hydrogen gas and plasma.
One of the products is hydrogen gas, so avoid ignition sources.
The heat can start combustion of the hydrogen gas, which will result in an explosion.
Hydrogen gas must be collected from the dissociation of water.