E.S.
I'm with the yes you are being overprotective crowd. Maybe calling you overprotective is the wrong way to put it ... we all want to protect our kids, but I think your expectations of wanting the bus driver to overprotect your kids are a little skewed. Our bus drivers can not let the kids off unless they have an adult to go to. That is their only rule by me. When I have been late to get to the stop, they have let my girl off the bus because there were adults at the stop .. albeit they were my neighbors and no one specifically to get my daughter, but that is their policy and it is no one's fault but mine that I didn't get to the stop. My neighbors made sure she made it the three houses to ours and I would hope your neighbors would do the same for you.
Think about it..what would you want the bus driver to do...ask every person there for identification? Let's pretend they did, the unsavory person there to pick up your kids would give him one. What good would that do? Or asking the bus driver for their identification.. again, what good is that going to do? I would think any decent bus hijacker would have a fake bus id in hand that would have allowed them to get the bus. All this identification requesting would make the bus trip take hours longer than it does. Your expectations are just not realistic.
You are quoting a story from 1977 which was back in the day where Joe could walk into the bus company and say he was taking the route over for Bob because Bob had the flu and the bus company would let him do it. That doesn't happen anymore.
You have to know that there are some things that are not within your control. Teach your children to run from strangers who are trying to coax them to go somewhere. That's the best you can do. We all have fears, but the chances of them coming to fruition are minute. I have recurring nightmares about my car going off a bridge into a lake and figuring out how to get my 3 (soon 4) little kids unbuckled and out of the car and out of the lake when none of them can swim. This doesn't mean that I stay off of bridges because that is completely unrealistic.
With all that being said, if you are extremely uncomfortable with the situation, drive them to school. But I think you have a better chance of getting into a car accident with them along the way or of having your own car hijacked than you would these extreme bus situations. Yes, like you said, it could happen, but you have to look at the possibilities of it happening.
If you were going to live your life trying to protect them from everything bad that could happen, you would need to move to the middle of nowhere and stay in your house, never get in a car, never socialize, never let them out of your sight, homeschool them and I guess do this all without gas service because your house could blow up as well!
Hopefully this sounds silly to you.. don't let your fears take over!