If your right to bear arms clearly violates the rights of another or puts others rights at an unreasonable risk (such as WMD, ie: nuclear weapons, chemical weapons, weaponized bacteria) your right is limited as it is in free speech (crying fire in a theater that has no fire is the example given by the SCOTUS in a famous decision).Yes, but you admit that an argument that was not based on looks but something more reasonable would possibly stand up to Constitutional Muster even though the right to bear arms is, in your words not to be "infringed", right?
Just saying that some other person might use a car to kill many on purpose should not limit your access to a car, nor should such an argument be made to limit your right to arms.