Yeah at this point, how do you know what's operator error? Here's a local one that has been all over the news. I could be wrong, but this one definitely sounds like it's operator error. Just because it's a Rav4 it's big news. I've mistakenly put a car into drive instead of reverse, and have hit the gas instead of the brakes (This one while my dad was teaching me to drive. I almost plowed his Civic into a cement wall.). Sh*t happens. (Though I caught myself in both cases before causing any damage.)
Cape Toyota crash probed | CapeCodOnline.com
Driver in crash: Toyota accelerated while braking - BostonHerald.com
Someone hit my mom's parked Toyota the other day and didn't leave a note. I told her she should report it to the news and they'd be all over it

Maybe a runaway Toyota was drawn in by the parked Toyota's electronics! Or maybe there's a serial Toyota basher out there taking their anger out on parked Toyotas!