Oh that's funny Good luck.
Finding an honest mechanic here in Vegas is hard enough.
But finding one who won't lie and say 'Oh yea I've worked on plenty of smart cars.' Then look for the engine under the front service flap.
Closest Christian Brother's is 245 miles away in Phoenix, AZ
Luckily, I have a garage, tools, some ability and still healthy enough to do my own basic maintenance.
I have found more mechanics here in Vegas who don't work on smarts or prefer not to work on them, than want to.
If it's really dire, you can always take it to Fletcher Jones Imports they still work on smarts.
Yes Mercedes Benz prices$$$