There was one SRM Denver mission I was playing in with my group, and I was using my magician. During the course of the run, he got seperated from the group since he was working on something independently from the others. Some shit went down, and he had to be there FAST. The problem was the fact he was halfway across down.
The rigger said over the commlink, "Want me to send a van for you?"
My magician replies, "That'll take too long."
He threw open the window on his third floor apartment, casted force 5 Levitate on himself, and jumped out the window.
He got his force 5 spirit to sustain movement on himself, and he capped the spell out at 5 hits. Using the rate of movement described by the spell's description and multiplied by a factor of 5 (The force of the spirit), I figured out he was flying across the skies of Denver at roughly 93 MPH.
Good times.
I personally like movement. I almost think of it as relativity: The rate of motion for the travelling vehicle or person is safe for them, but it appears to be super fast (or slow) to an outside observer. Even so, I don't try too hard to make it "make sense" or conform to real world physics. That's just asking for headaches and disappointment.