The accident occurred in Llucmajor at around half two on Thursday afternoon.
There were jeers from opponents of both the rentals ban and the terraces bylaw.
"I didn't know what I was doing. It's very difficult to believe or to understand, but that's how it is."
The two parts of the trial will revolve around Bartolomé Cursach and Miguel Pascual.
Fines for supposedly illegal lets can be up to 40,000 euros.