bostonfred
Footballguy
It usually means "go around".
There's a good chance that the guy is from the U.K. or Ireland or somewhere where they drive on the wrong side of the road, so he thinks he's in the slow lane and is being polite by telling you that this is as fast as he intends to go while in this country, but you're welcome to pass him on the right, as they do in his country of origin.
Also, he wants to have sex with you and is inviting you to a rest stop.
There's a good chance that the guy is from the U.K. or Ireland or somewhere where they drive on the wrong side of the road, so he thinks he's in the slow lane and is being polite by telling you that this is as fast as he intends to go while in this country, but you're welcome to pass him on the right, as they do in his country of origin.
Also, he wants to have sex with you and is inviting you to a rest stop.