'Cars' stunt

I must admit I loved Cars. It was fun, and the message about sportsmanship and teamwork was portrayed very powerfully. I was a bit foxed by a trick that Doc teaches Lightning McQueen -- how to turn right by steering left! So I was happy to find this article on Popular Science which gave me a reasonable explanation.
Link to article

Drive or Fly

Apparently, driving in a car with a modest fuel efficiency of 10.5 km/litre generates 215 grams of CO2 per kilometre.

On the other hand, flying 1 km generates 381 grams per person.

Now bear in mind that the per-person rate in a car can be halved or quartered by the occupancy. So if you're one of 4 people in that same car, you are responsible for only 54 grams/km.

Of course, this does not take into account the cost of fuel, or the time taken.

(using source material from popsci.com)

Chemical powered car competition

New honeycomb tire is "bulletproof"

http://news.cnet.com/8301-13639_3-10098240-42.html?part=rss&subj=news&tag=2547-1_3-0-5

Will this, someday, spell the end of tyre inflation?!