Wow, I had the same dream, except it was Tsathagua, two Elder Gods whose very names invoke insanity, and Loretta Lynn... err, long story.
Tell us who those gods were?
http://bit.ly/HRN5UC
Why didnt I go insane from these? What a ripoff.
Anyway, you are all getting hyped about a) launching carts past enemies, b) riding carts in adventurer mode. Firstly, it's going to be a rare case that you'll have trouble even setting up. Toady managed cause he can place enemies where he likes, and they can be set not to move. More likely your "army carts" will land where the enemies are, than past some exotic ledge with them. But, then again, there's always room for various stupid dwarven tricks. Secondly, I will not be looking forward to such an implementation until a fort can be
retired. Currently you need to make a thriving fort, elaborately design everything, then kill off everyone in it and throw all items around in it, just for a rollercoaster ride for your adventurer. And when you've had your fun with that, you'll find it difficult to edit even a single tile afterwards due to need to reclaim and then kill off those dwarves too; and when you wish that there was another way, you'll realise that there are no minetracks available in worldgen either, you'll be limited to your several fort tiles to ride in circles. All in all, you wont see many cart rides as an adventurer, until a fort can be retired, or until you can temporarily take adventurelike control of dwarves during fort mode.
By the way, how do you feel about that last line, fort retirement and/or temporary dwarf control? I paid attention to most recent development but might have missed some long term goals.