Woah! Are you actually in orbit? How do you do that?
I was! A bit over 2000 m/s.
I may post a followup "how to drive your SRV into stable orbit" video, but the gist of it is that you tilt forward and boost while in the air. This increases velocity. When you come down, you bounce back up... and since you're going faster, you bounce higher, which gives you more time to tilt-boost, so the next bounce is even higher, etc. Eventually you're making 100km leaps and getting up to 10k meters or more. And eventually you're getting to near-orbital velocities, and the "effective" gravity you experience goes down. The magic moment is when you can keep yourself up indefinitely by boosting.
After that, you're set, you just need patience. If you go too high, you'll reach an invisible ceiling where physics breaks, you lose all control, and drift away from the planet. Lots of people have managed that. But if you're careful, and patient, you can keep your altitude more or less constant and continue gradually accelerating, boosting less and less often while you wait for your vertical speed to level off, until eventually you're in an honest-to-goodness true circular orbit. It takes a while: getting into stable orbit took me the better part of an hour to do. You go from boosting constantly, to boosting on and off, to boosting every few seconds, then every many seconds, then every minute, then every few minutes, to a couple of final adjustment boosts spaced way out to perfect the circle.
This is actually the second time and the second planet where I've pulled this off. Shadowplay wasn't working the first time, but I got lots of good video footage for this one. I may try to put together a how-to/demo vid, or maybe I'll try to talk someone actually entertaining (Ghost Giraffe, ObsidianAnt, etc) into doing it. It's really not that difficult, once you know a couple tricks. And the current SRV physics are
incredibly forgiving to high-speed collision.