OP doesn't provide details as to what he was driving, e.g. rental? But, as others note, there is an increased willingness to collect these things, the penalty for failure to pay will likely rise astronomically over time, OP may someday wish to drive in Italy again and, if a rental, there is a likelihood that the rental company won't do business again due to the administrative problems things like this create.
For Eur 69, this hardly seems worth it. Having to pay Eur 400-500 3-4 years from now when you suddently need to drive in Italy will be more aggravating.