It's called "Throttle by wire" .....
Here's some information about it.
Whether or not those claims are legit or not - it's completely possible that such things CAN occur. Overall -everything is completely controlled by the computer. If there aren't any programming flaws within the system - computers can get flakey from time to time. They're not perfect. I've had my 2007 for about 9 months now and I pay attention to my truck and what it does - and there are times where it does some weird things (rpm's, shifting, etc). Anyone with a tacoma should take these claims seriously and keep them in the back of your mind - cuz you never know. I'm sure Toyota is sweating bullets trying to figure this out....and I'm sure it's not easy to find the asnwers.