Much of what has been posted here argues for stand alone iDealers with a dedicated service department with all the bells and whistles. And a fully trained staff which is not so easy.
I have seen technical training from both sides of the desk and imparting information that is both accurate and useful is harder than it sounds. My model specific "factory schools" from Bell, MBB, Aerospatiale and Pratt&Whitney were each several weeks long in fully equipped facilities, but once I encountered them in the field I realized that all they really presented was where and what each component was. Any tips on common troubleshooting matters, problem diagnosis, tips on the fastest way to do the job, etc. came from tribal knowledge not the school. OJT via an experienced co-worker is the way most real-world training gets done and there simply are no experienced people yet for i3's.
It is going to take a few years to build up a pool of experienced Ev techs who will be able to do more than just throw parts at a broken car until it works again. It may be easier to train kids with an electronics interest to be mechanics rather than teaching ICE mechanics about EVs.....
Clipper Creek HCS-40P 32a EVSE
2014 REx Arravani Grey Giga all options
2008 Infiniti EX35
2008 smart ForTwo Cabriolet
2000 F-250 Powerstroke
2006 Westfield eleven
1984 Laverda RGS-1000