Take baby to the drive in?

Has anyone here ever taken a baby to a drive in movie? Did it go well? My husband and I have been debating taking our 9 month old to the drive in with us so we can go see a movie without having to worry about finding a sitter. I thought since it's right around bedtime he may sleep the whole time anyway. That or he will want to play. I doubt he would be too noisy unless he just flat out had a screaming fit. I don't know, I have some social anxiety so I don't like drawing attention to ourselves which is why I'm debating on this... Any advice?