At the moment my husband has been stopping the car until he calms down and stops barking but 2 seconds after driving on he starts again

My husband has been looking into one of these collars mentioned but would like to know of anyone who has used one!!
We are sure that it is an excitement thing as when we get his collar and lead out he goes mental

but we wont go out until he has clamed down, he will sit at the door and not go until we say!! It's just the barking in the car, like I say it drives us mad!!