Phil (aerohead) says a GM land speed racer pickup used a half-tonneau for a 200+mph run. A half tonneau, not a full one. Food for thought?
Quote:
AUTOWEEK carried an article for a Gale Banks GMC LSR pickup which sported the 1/2-tonneau for it's 211-mph run at Bonneville.
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If this isn't it, the thing uses the same principle.
Here's the Banks Sidewinder. Notice the half tonneau.
What I'm trying to say is, although it may defy logic a half tonneau seems to work better than a full one.