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GM's Ed Welburn walks Jay Leno through the Elmiraj concept's design [w/Video]

General Motors' vice president Global Design Ed Welburn stars in the latest of the 'Jay Leno's Garage' YouTube series, running the talk-show host through some of the new Cadillac Elmiraj concept's design features and what it means for the brand's future. We get a look at all the classic Cadillac design cues such as the vertical headlamps and tail lamps as well as the central hard crease that Welburn says is "important in every Cadillac". Leno and Welburn then move onto the Elmiraj's features, such as the large doors' integrated handles and the slimmer A-pillars before a more in-depth look at one of the concept's most striking features – the grille.

Supercar owners hire runway to find top speed

“What’s the point of owning a supercar,” some might say. “You’ll never be able to reach its full performance potential on the road.” And while that’s true, there is an alternative to risking your driving licence if you buy a car like the new McLaren 650S or Lamborghini Huracan. Essentially, someone hires a private runway, and invites a load of supercar owners to drive as fast as they can before running out of tarmac.

Hey Craig Jackson, how did the auction go?

Plenty of people were surprised this week that the original Batmobile sold for $4.6 million* at Barrett-Jackson. And few were more surprised than Craig Jackson, the ringleader behind the mega-million-dollar auction in Scottsdale. The last time we spoke to him, he had estimated the original Batmobile to be worth somewhere around $2 million (later $3-4 million, as he now said).