Why I don't like hybrid cars

OK... I'm not against the concept... although I do love the South Park episode that pokes fun at hybrid owners and their smugness. I don't like them for an entire different reason...
they are silent.
not a big deal, right?
Try walking through a crowded parking lot, full of hybrid cars, and bad inconsiderate drivers.
Try wrangling 3 kids through said parking lot. It's a rule to hold hands while in the lot, look for vehicles that are on, and listen for running engines.
Yesterday, while walking to our car, the E's and I were almost hit by an SUV hybrid. We couldn't see the driver, the lights were not on, and of course, we couldn't hear it. It was parked next to our mini-van and the driver didn't turn around before she backed out of her space. I was turned away from the SUV, but caught the movement out of the corner of my eye just in time. When I jumped out of the way, dragging two E's with me, she finally stopped.
This isn't the first time something like this has happened. Of course, hybrids have back-up lights like other cars, but some drivers throw it into reverse and step on the gas with no lag in-between.
Someone needs to put back-up beepers on those things.