My wife calls me from the parking lot in front of my work and says "my car (an 00 RX300 Lexus) is making a funny noise". This is after the check engine light had come on. Well, I get out there and the catalytic converter from the rear bank of cylinders is glowing red so I tell her to shut it off. Just then I noticed a very faint blue flame coming from the top of the cat. I sent a friend after a fire extenguisher and put the fire out, apparently doing no damage to anything other than the cat. The car was put on a flat bed and towed 50ish miles to the neerest dealer. Incidentally, I feel that the check engine light was the O2 sensor throwing a clogged cat code, and the cat got so hot it just started to melt and the noise she heard was an exhaust leak from the hole in the cat. Has anyone seen or heard of a cat catching on fire before? The car has 61,xxx on it right now. I'm hoping Lexus will cover the damage and the $200+ tow bill, since we wrote a check for an 05 RX330 last spring.