Foolish arrogant acidic Quetzal

At longer engagement distances the gun becomes theoretically more deadly- providing that it has the correct configuration and load out for those ranges and an operator capable of engaging at longer range. But if your plan is to take the gun- the car will likely give you element of surprise and you can engage from a distance optimal for you before the weapon owner can ready their weapon unless they already have it standby to fire (which it is to your advantage to wait for the weapon to be stowed or the user to be distracted.)

All in all I would say that it would be pretty foolish to choose a car in a duel against a gun (depending on distance and other factors) but if we are talking about an engagement that you control the rules- the car would probably be the better bet if we ignore the criminal nature of the act and the fact that neither one is a smart or legal choice when we are talking about armed robbery.

That said- if we bring the law in to things- your odds of being stopped for simply having a car in operable condition are much lower in all 50 states and most any circumstances than if you were to do the same in a public space with a gun- and unlike the gun there isn’t the same possibility of being arrested for a crime while simply driving. It would also be much harder to prove intent and premeditation with the car if/when you got caught- and possible to pass it off as an accident. Your sentencing and jail time would likely be lighter- possibly non existent with a manslaughter or reckless endangerment charge- and if intent is proven and no one dies you could eat off with vehicular assault whereas firearms often carry

Minimum sentences and felonies- less leniency in public or court attitudes, and give the DA a host of additional potential charges they could bring that most all have harsh outcomes if they can’t or won’t or find it a bust to go after the toughest charges they can file.