I read that the way the dealer is supposed to disable a clunker is to drain the crankcase, then pour silicone silicate in, start the engine, and it slowly dies. Geez, I know it's just an engine, but if I were to see this, I'm not sure I could help myself. I'd be yelling "Turn it off! Turn it off!". Seems a shame to inject automotive poison, then sit back and watch (and hear) an engine slowly die.
What's interesting is that in one week, $250 million of the $1 billion allocated was used. What many dealers are doing (this is no surprise) is that they're taking EXISTING used cars on their lots, changing the dates they were traded in (an unethical used car dealer, who would have thought?

) and submitting the forms to get $4500 per car. Then the dealer keeps all the money.
Gee, another well thought out plan.