I agree that it is unlikely that the car jumped forward without any input
A car is an inanimate object.
A car moves if a human being (trained in driving a car) starts the engine, engages the transmission, and applies pressure to the accelerator.
My father taught me what I know today about cars.
His generation always had tools and parts in their vehicles from the 20s, 30s, and carried that tradition on as they began driving more modern cars in the 60s, etc...
That said, very few of us today carry many tools in our 21st century vehicles.
One, it wouldn't do much good, because repairing cars today means "diagnose, remove, replace the broken part.
Then there is the issue of the computer that does what humans once had to do.
When I bought my first car, dad lectured me on the stability of stick shifting and the "tranny" (as used back in the 60s, not as used today).
In essence he said that a car can't move without human intervention/interaction.
That is what I've observed throughout my life.
I don't dismiss what others say to the contrary, other than to say, "I have NOT seen an automobile (or any of it's other forms) move without human intervention".
Yes, a tornado can lift them from one spot to another, as can a hurricane, a tsunami, and an earthquake.
However, if any of those natural disasters strike, the automobile isn't operating through any of it's intended means.