In FL, a speed camera can give a car's owner can a ticket without needing to know he was the driver. Your perspective is not true nation wide.
"The registered owner of the motor vehicle involved in the violation is responsible and liable for paying the uniform traffic citation issued for a violation"
What would be the alternative? Just get who was driving your car to pay you back for the fine. If they are not accountable/honorable enough to back you back, then why were you letting them drive your car in the first place?
The same "alternative" that there is to every other crime in existence, proving the person you charged with a crime actually committed the crime. The default is suppose to be innocence, not guilty. It is the state's responsibility or problem to prove someone is guilty beyond a reasonable doubt, not a citizen's responsibility to prove their continued innocence at all times.
