aibu to stay annoyed at my shouty husband?

[Wearsuncream]

He was reversing out of a space in supermarket - in a new bigger car. I was sat in the back and saw someone walking along a path (that had bushy plants alongside) very close to the car and her route took her directly behind our car. I SAID "careful theres someone coming" and he carried on reversing. So then I raised my voice in a slight panic, as I envisaged court cases, injuries blood etc. and my Mum also said "watch out". Husband then starTed shouting at me saying he had seen her, stop shouting at him (i wasn't) and other q aggressive stuff - in front of my Mum and our three young children. I said I was only trying to help and he continued on his tirade.
So far so petty. However...
He has previous form for completely going off on one on similar petty stuff IN FRONT of my parents
Aside from the fact that I felt it was unfair I was mortified and embarrassed in front of my Mum. At the time I let it go but have just said how upset it made me. His response was that his reaction was perfectly reasonable.
AIBU?

I have also had the same experience. My dp is very over sensitive to any criticism when driving and often reacts in an over the top way. I avoid letting him drive me anywhere I can drive myself frankly. I suppose the way I see it is I would rather have a row than him do something stupid and injure someone else. I would however tell him that you would prefer him to complain later rather than embarrass himself in front of your parents and possibly upset his children.

Thanks - id also rather risk a row than an accident - though Im not a back seat driver.
I have said before that I want him to complain at me later and not in front of my parents - the irony being that's because he is the one who comes out looking badly behaved not me so Im doing it in his interests anyway!