That guy is insane. What on earth possessed him to do that?
I had something similar - nowhere near the same scale though. Went into a McDonalds car park with my first car, probably within 9 months of passing my test. Drove past a Vauxhall Omega or similar, full of massive guys, who then decided to give chase just as I went past.
Ended up racing through town - bearing in mind at the time I had a 1litre Fiesta MK2, and he had a huge Vauxhall (compared to my car at least), it was absolutely terrifying.
He pulled up in front of me, ALL of them got out and started running towards the car, at which point I reversed, went through a red light and back on myself and just **** myself whilst driving away.
Thankfully he must've taken a wrong turning almost straight away, as we were immediately away and I couldn't see him, but it was really, really scary. Particularly as my car was so slow. Can't imagine how scared that guy must've been.