I would just like to know if I can go with my hubby to work, he's a truck driver, for about 4 hours?

I think we all need a little more information if we're going to be able to answer this for you. Like what would stop you from going?

I would just like to know if I can go with my hubby to work, he's a truck driver, for about 4 hours??
What does your doctor say? And how close are you to expecting?

Four hours is along time.

As stated, we need a bit more information...

If you are not high risk, and aren't really close to term then you should be fine.

Are you one month or 9 months, are there other medical issues, are you too big to fit into the cab ? Only your personal doctor would know if this could be a risk just for you, depending on all of your issues.