Benefits of robotic cars

I've long had a little pet idea, my Transportation Concept.  I'm happy to say I'm seeing others think about the benefits recently (A Car-Free Future?, Intelligent cars can achieve improved efficiency, Tailgate for Mother Earth!).

I've yet to see others put the two parts together, but the benefits of automated cars are becoming apparent.  They start with:

• Freedom
  • Still your own space.  Put whatever you want inside.
  • Do whatever you want en route.  Read, watch a movie, eat, surf, write or maybe even exercise (though why not bike instead?).
  • Flexible storage.  Need to transport that 50" TV?  No matter how small/cheap you're daily commuter compartment is you'll always be able to have extra storage follow you.
  • No rush hour!  Leave whenever you want.
• Efficiency
  • "Platooning" drag coefficient reduction's.
  • Preplanned deceleration reduces braking energy loss
  • Planned acceleration reduces "lead-foot" loss
  • No stop lights, no braking.
  • Smooth speeds
  • No traffic jams
  • Optimized routing
  • Space: Parking spaces hidden and 1/5th the space, or entirely unnecessary.
  • Human labor: NONE! $63.1 billion in savings.
• Flexibility
  • Swap out drive trains.  Use batteries if their most efficient, use hydrogen if it is, use <insert future tech> if it is.
  • Switch propulsion.  Going a long distance?  Catch a maglev bullet as cargo without even thinking about it.
  • On foot?  Take the bus.  Change your mind?  (Maybe you bought a few more things than you expected?)  Your compartment can still come get you.  Or rent one.