A Mikado was a minor leader in Japan of old. Gilbert and Sullivan wrote a famous comic operetta about one.
The word Mikado sounds a lot like 'My car don't', and for joke purposes we can add to this, making 'My car don't go'. 'My car don't start' would also be OK.
It seems logical to bring a garage into this, leading us to an attempt of a joke as follows:
This Japanese official can't start his car one morning. He pushes it all the way to the local garage, where the mechanic says: 'What's wrong?' whereupon the official says: 'My car don't go.'
The success of this gag would depend on how you say it. You have to say 'Mikado-nt go', as if you were saying 'me-car-don't go.'
Next post, we'll look at another.
Wishing you good gag-writing, Marc