2 Articles
Alcoa developing lighter wheels for increased efficiency

Heavy steel wheels are relatively rare in showrooms these days -- it seems they are heading the way of bias-ply tires. Most new cars are delivered with cast aluminum wheels. While cast wheels weigh less than comparative steel wheels, they are still manufactured with thick castings and solid spokes (forged aluminum wheels, both lighter and stronger, are generally more expensive and as such, fitted largely to performance vehicles).

Jay Leno's bio-diesel turbine supercar isn't a joke

UPDATE: Live shots from SEMA show floor added after jump