Annoying Things Car Drivers Do (no. 1,312,851 in an ongoing series)

Why do motorists insist on overtaking me on my bike only to immediately stop dead because they're turning? Happened to me last week: car overtakes me, seconds later starts tuning left into his driveway (so it's not as if it might have caught him by surprise!), causing me to slam on the brakes to avoid piling into the back of him.

Just bloody wait will you?!