The police officer is trained to and routinely deals with situations like this.

You don't know the police officer, you would have no idea if he "routinely deals with situations like this or not."

Only makes sense he should handle the situation in the safest manner possible, which in this case would be warning the driver to avoid touching his firearm, preferably BEFORE bringing his attention to it.

Shouldn't that go without saying? He asked the driver, "is that a real gun right there?" The driver did not respond to the question and reached for the firearm. From the time the officer finished asking the question to the moment the man reached for the gun was three seconds.

Maybe I'm just stupid and us citizens should be more used to people pulling guns on us for doing things that we don't give a second though.

What...?

Imagine the truck driver's history, and how he's used to handling the firearm.. Friend asks him if it's real, he's going to pick it up and show it to him. Second hand nature to do so when the cop asks him also.

This is all anecdotal because you do not know the driver of the truck or his history with firearms. With that being said, I do see where you're coming from, but it doesn't make it any less of a stupid move. Don't you think "second hand nature" for a police officer is to immediately pull for his sidearm when he see's the person he just pulled over reaching for his? Absolutely ridiculous that you are condoning him for such a non-issue.

But sure, the cop is a good guy for just pulling his gun on him instead of using it as well...

The fuck are you talking about?

I redact the stupid comment, but you'd think this kind of thing is common occurrence and would be handled differently.

Again, completely anecdotal. How would you know if an incident like this is a "common occurrence"?

Cop seemed like he was asking a casual friendly question rather than a serious question that could potentially save a life or cause a death.

The officer pulling his sidearm had nothing to do with the question, but rather the driver reaching for his gun.