Actually even though you have to be stopped those Sat. services really aren't that bad. We have DirecWay that we use for our boat when we dock. Other than the horrible latency and upload speeds it's really not that bad.
I was thinking that you could do like the mobile DirectTV dishes do, but I forgot you have to allign a transmitter and receiver instead of just the latter.
We should just build a giant WiFi network across the US, just use every car as a router.