Dreamscarred Press is in the works on writing an airship sourcebook

[Libertad]

They even put up a playtest document for people to comment!

Also, Paizo thread with the original statement:

Allow me to introduce myself. My name is RJ Grady. My first freelance project was Unorthodox Barbarians d20. I started my own product line, Tripod Machine, with the five-starred Adventuring Classes: A Fistful of Denarii. Since then, I have run a successful Kickstarter for Conquest of the Universe, a space opera setting for the Pathfinder Role-Playing Game, currently under development. Now, I am happy to announce that I am writing a book for Dreamscarred Press, Airships.

Airships builds on some of the best OGL content from the third edition era, bringing it up to date for Pathfinder. Airships integrates smoothly with the vehicles rules in Ultimate Combat, but builds upon them, to capture the spirit of daring balloon races in the air or ship-to-ship combat between dwarven Waraxe-type craft. The bulk of the book concerns aerial combat and movement and airship construction. It also includes new material for player characters in aerial campaigns, including feats, class archetypes, and new spells.

Today, we open a month-long playtest of the material. Because of the breadth and length of the material, your feedback is absolutely important. Based on the criticism and input you offer, we will thrash this thing into its final form. Feel free to drop comments or questions into this discussion thread. You may also email me at pawsplay@yahoo.com.

If you agree to take part in our playtest, just click on the link below where you can view the playtest document and make comments.

To this day I'm still surprised how so much of what DSP is interested in publishing lines up with my own interests.  Eberron and Final Fantasy games own, and something like this provides a new dimension to PF games.  I did talk about airship adventure ideas back in my Planar Revision Project for the Plane of Air; if this sourcebook is OGL, I might utilize it for my own works and settings.

[Mr. woop woop]

The rules for "sudden stop"

(click to show/hide)

Sudden Stops
When an airship comes to a sudden stop—its movement is reduced to 0 in some way other than the driver using a drive action to slow the vehicle or a loss of acceleration—both creatures and items on the vehicle are violently pushed toward the vehicle's forward facing one square for every 10 MPH of the airship's speed before it came to the sudden stop. This movement does not provoke attacks of opportunity. At the end of this movement, creatures and objects take 1d6 points of damage, and creatures must succeed at a DC 20 Reflex saving throw or be knocked prone. If the movement pushes creatures or objects into solid objects, that creature or object takes an additional 1d6 points of damage for each square they would have moved. Occupants who are deckside go overboard and are automatically prone; if the ship is upright when it stops, characters above deck may attempt a desperation grab, at -1 penalty for every 10 MPH of the airship before its stops, and if they succeed, take damage as though they struck an immobile object.

This could be interpreted as a new ruling for Bulls rushing people into walls if you want to get cheesey.
"If the movement pushes creatures or objects into solid objects, that creature or object takes an additional 1d6 points of damage for each square they would have moved."

Also ... If a character picked up a vehicle after getting his speed nigh-inf he can deal a lot of damage just by running into someone.