Tim: Come on over here, guys. All right. Just generally, tell us the difference between a racing engine - and a passenger car engine, Al. [Als talk] Stop! Stop! Stop! Um... I'm talking about this Al.
Al Unser Sr.: Well, it's a methanol engine instead of a gas-burning engine.
Al: And I believe the heads are made from "Al-luminum." It's my favorite "Al-loy."