We stopped tallying the hate mail we've received at Car Talk years ago. But one letter still remains on top of our pile of vituperative missives: this week's offering from one Melissa Peterson, a.k.a., "That Little Twerp." Maybe it was her need to let us know that her dog hates our show as much as she does. But Tom and Ray will soldier on, despite Melissa's wrath, and try to convince Gloria that shutting off her car while going 80 miles per hour is not a great way to address its acceleration problems. Elsewhere, Tracy wants to blame her mom for her Civic's electrical system going wacko; and Tammy is trying without success to convince her husband that Boston drivers aren't the worst in the world. And, can Evan find a car with a gas pedal that won't destroy his knee? All this and more, this week, on Car Talk.