I think the opposite is more likely. Put a bomb in a remote controlled car - you're going to need one either way - drive close to your target, detonate. Done.

I think the opposite is more likely. Put a bomb in a remote controlled car - you're going to need one either way - drive close to your target, detonate. Done. With a machine gun you have to drive close and then aim extremely accurately. It sounds implausible - at least not without AI superpowers in the targeting system. At the very least you'd expect lag to be a significant problem.