[viraptor]

Give the streaming of location data for cars in the area, I don't think they care much about those extra MBs. If they did, you'd get a "N cars within X km of you", not a live-ish map.

A quick summary like "extra fee for airport pickup: X, pickup location restricted to: Y, etc." should be pretty comparable.

[plorkyeran]

A live map of cars near you takes an incredibly small amount of data. Once you have the map data that'd be easily doable over a dialup connection.

[viraptor]

Yes, it's pretty small, same as description of airport rules would be.