Do your damn research.
Basil is a VICTORIAN mouse! I am sick and tired of reading poorly written fan fiction with very little regard for the actual character himself. It is not difficult to learn a little more about the time and society Basil lived in. In fact, that's part of what makes you a real fan. It is possible that he might have had access to telephones and cars, but as a MOUSE, it would have been difficult to use them due to the sheer size issues that arise. If you can't bother to even try to do the research, then please just leave him out of it or at least write a damn disclaimer at the beginning saying that the work is "for fun" or even an "alternate timeline". Give yourself that much credit.