So simple, and sadly so true:
1) Get a car with fancy onboard computer capable of helping you park, etc
2) Illegally tint windows so no one can see inside
3) Find your victim on foot or bicycle
4) Step on the gas
5) Just to be sure hit reverse and make sure your victim is really dead
As far as I am aware, FL law basically says that you must positively ID the driver, and that the owner of the vehicle is NOT accountable for crimes committed with it by others. So since (a) you were hit from behind & (b) you are likely dead... how can you ID them?
Even if pulled over 15 minutes later, its unlikely that any witness had continuous eye contact with your vehicle since the crime. Claim your vehicle was stolen and that you just recovered it 5 minutes ago on the side of the road. Good luck to those who attempt to prove that you were in your vehicle the entire time, remember all you need is *any* reasonable doubt and you will be found not guilty
What happens if there just happened to be a police officer that witnessed it? If caught at the scene, blame onboard computer for taking control of the car. Since your windows were tinted and no one could possibly prove that YOU were in control of the car at the time, you *might* be fined for illegal window tints, but since you can probably get the jury to have 'reasonable doubt' on account of the documented hacking of on-board computers, just say the car was driving itself and the dashboard display said "YOU'VE BEEN PWNED"
And you don't even need high priced attorneys for this to work! Yet another reason why FL is continually listed as one of the LEAST safe places for pedestrians and cyclists. I am begging someone in law enforcement, attorneys, judges or anyone to demonstrate how this scenario could possibly NOT result in "not guilty"