I've been getting all I can out of a 2010 for a long time, (242,000 mi), but am considering something around a 2020 that I believe will be much more feature rich, quiet and efficient. One concern is that it needs to have the same cargo space with the rear seats down as my 2010. A local service manager told me that anything after 2020 will be smaller. I would like to ask anyone who has knowledge on this subject if a 2020 is in fact the same size as or very close to the 2010, what are the major differences, and are there years to avoid between 2016 and 2020? Also, I understand the Prime has a much larger battery, does it play into reduced cargo area? Thanks,