Sounds like what i get here. I'm going along at the speed limit, someone pulls out from behind me, overtakes and gives me a filthy look and disappears, only for me to pull up next to them at the next set of lights.
I always give them a cheerful grin.
I love it when that sort of thing happens.
My favourites back on the Gold Coast were the idiots who'd frantically gun it past Mum and I at this intersection near our place ... only to then instantly take the onramp to the Pacific Highway and get stuck in massive congestion while we just kept on driving over the completely empty overbridge.