A few useful little updates and game-altering changes:
Pressing the F1 key now toggles the HUD on and off so you can take screenshots without all the text and map in the way
The car now has a speedometer
The subvortices are now more visible (width has been reduced) and create cycloidal marks
There was also an excellent suggestion to give the tornadoes "eyes", so the tornado is a hollow tube instead of one solid mass, so when you're in the middle you can see the eye/core of the tornado!
(View from inside the funnel)
