Unintended Acceleration: Unleaded Solder and Tin Whiskers?
Ever hear of "tin whiskers"? They grow out of soldered wiring unless the solder has lead in it. But the past few years, environmentalists have pushed for and won concessions about the use of lead.
The Truth About Cars has a great piece on what happens when those whiskers grow, the electrical gremlins that can occur...and how all this might fit into the unintended acceleration puzzle. It's a must-read.