Re: Show us evidence..
You know what, I'm not sure that excuse would've worked in a murder enquiry. Or sny inquiry that the police were taking seriously.
Someone might have done some investigation into who else could possibly have been driving. Or they may have put the evidence before a jury to let them decide the liklihood that the hirer wasn't driving.
But this was a motoring offence, so wasn't investigated properly. A crime got recorded and solved so everyone involved meets their target.