Probably not substantially more than what’s revealed by your mobile 'phone.
Less freedom or more? The fact that somebody knows about our travels doesn’t make us any less “free” to travel. Fewer of us will need to own vehicles. Travel might become more viable for those who can’t afford it under current market conditions. Yes, there’s a potential for more surveillance. Is that a trade-off we’re willing to make? We’ve done it with our 'phones, after all.
Is there a role here for Choice? Ensuring adequate competition, industry monitoring, consumer safety, comparing transport providers, etc.
Canvassed here:
Apparently, it’s safe enough - provided there’s a human driver to take over when the robot fails. 
If autonomous vehicles take off (so to speak), then transport markets are going to change drastically. That’s probably another task for Choice. What will taxis and hire cars look like? Will they be part of a transport-on-demand industry? Then there’s freight, couriers, postal deliveries - we live in interesting times.
Our neighbours across the ditch have beaten us on that:
