Snipped for brevity only
RFG dd not smoke cigarettes ever, so far as had been reported. He would sometimes have a "celebratory"
cigar after winning a case. He did not like cigarettes.
The ash was small, just a fragment. It was
not like someone flicked an ash on the floor. LE floated the theory that someone could have leaned into the car, on the passenger side, and a small piece dropped off; that should indicate how little there was in the car. I'm not agreeing that it was someone leaning in, just saying that LE thinks it could have been that.
That said, the only evidence that anyone other than RFG interacted with the Mini is that ash fragment and smell of smoke. There was no unidentified hair or any unknown DNA in the car that was found; RFG's DNA was in a water bottle in the car. There was distributor for the brand in Centre County.
While there were not enough ridges to be able to make a positive identification of the fingerprints inside the car, but the car was not wiped down. RFG's fingerprints were on the outside driver's side window. That
only tells us that the exterior was not washed after RFG exited the vehicle.
There would be a problem with someone holding a gun on a driver, while the car is moving. The driver can drive the car into a telephone pole or something, hitting the pole with the passenger side of the vehicle.
It would be possible if the car was parked.
Keep in mind that I am trying to play Devil's Advocate. Look at what I'm writing and see if you can come up with a counterargument.