Well, round trip time of light to GEO is 280ms plus processing time on the satellite plus "last mile" connections on earth. I usually see closer to 500ms on sat

Well, round trip time of light to GEO is 280ms plus processing time on the satellite plus "last mile" connections on earth. I usually see closer to 500ms on satellite internet. In most of Canada, I've never seen a wifi network give me better than 150ms to AWS in us-east in Virginia or us-west in Oregon. Even in SF pinging another server in SF with a wifi connection in the middle can get more than 80ms. For a bus system in a constrained area, you may be able to do it, but you'd probably be better off just going with tracks of some kind to eliminate drivers entirely.