With all the vehicles I have owned...I have only had one throttle issue...with my 84 Monte Carlo SS...had to do with the cruise control...
As far as the 85 year old woman and the Challenger are concerned....she had no business being behind the wheel if she had such little skill...sorry but that's the truth and her son killed her just the same as if he had shot her by putting her behind the wheel. He should be facing charges....for being that stupid. It's stupid things people did like this years ago that killed the performance car the first time around.
High Performance Car + Low Performance Driver = trouble, and people getting hurt...
(now stepping off my soap box)